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Retzer In July

Today I went to Retzer Nature Center in Waukesha County to see how things have changed with July winding down. I started by taking the northeastern trail that leads to the pond. The usual birds were in this area including American Goldfinches and Common Yellowthroats. I was able to get a good look at a Common Yellowthroat singing in a tree but the mosquitoes and deer flies were so bad I didn’t stay still long enough to get an in-focus picture. This was a theme today. The bugs were easily the wort I’ve ever encountered at Retzer. The precipitation we’ve had combined with the lac of wind was the perfect storm for them today and they followed me all the way through the forested part of the Nature Center.

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Indigo Bunting

I moved through the forest trail quickly hoping to lose the bugs following me when I got into the open prairie. While I was in the woods I heard a few Indigo Buntings and saw numerous American Robins. I also startled a deer munching on plants.

When I got to the prairie trail I was unable to hear many of the calls that were so prolific just a month ago. There were not any Dickcissel or Bobolink, and only one Henslow’s Sparrow. There were however still many Field Sparrows and Clay-Colored Sparrows.

Immature Field Sparrow
Immature Field Sparrow

On the north side of the hill all of the tall grass was cut eliminating habitat for the Henslow’s and Savannah Sparrows. However, in the tree line farther north and tall grasses to the east there were still large numbers of birds. Most of these were juvenile Indigo Buntings and Field Sparrows but there were also several Eastern Kingbirds, Ruby-Throated Hummingbirds, more Common Yellowthroats, and an Eastern Towhee.

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Female Common Yelowthroat

On the way out of the Nature Center I got looks at a Gray Catbird and a Red-Eyed Vireo that was too crafty for me to get a photo of. The insects followed me the whole time until I got to the car.

I would have liked more time to search through the birds on the north side of the Nature Center but the bugs proved to be too much to deal with for me. Next time I’ll make sure there’s more of a breeze before I go.

Quest for the Grenada Dove – Part 2!

Earlier this year I went to the tropical island of Grenada to search for one of the worlds rarest dove species: the Grenada Dove.

As I look through the videos from birding in Grenada and find out more information about the local species, the thing that strikes me the most is that there is still so much to learn about them. Being so rare and on a relatively small island, few have studied the habits of this bird. While very little is known about the Grenada Dove, here are some things that we do know.

  1. Grenada Doves are endemic to the island of Grenada (Meaning they are only native to the island)
  2. The Dove is classified as Critically Endangered (IUCN Red List) with about 130 individuals left  (87 mature individuals) according to the Cornell Lab of Ornithology.
  3. The Grenada Dove is the national bird of Grenada
  4. The introduction of the Indian Mongoose had a negative impact on the Dove’s population
  5. The Mt. Hartman National Park was established by the Government of Grenada in 1996  to help protect the Dove’s habitat
  6. When spooked, the Dove is more apt to walk on the ground through the brush than fly away
  7. The population may be isolated to small areas where their habitat is still present

To learn more about the Dove, stay tuned for the video, coming soon titled “Quest for the Grenada Dove.”

Birds Of Watonwan County, Minnesota

This weekend I traveled to Watonwan County in Minnesota for a wedding. Based on the ebird statistics, Watonwan doesn’t appear to be birded very frequently with the exception of a few individuals. Due to wedding festivities my birding efforts were mostly incidental, but I was still able to get over 20 species in the short time I had.

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We stayed on a farm surrounded on all sides by corn fields. Driving down the long gravel driveway the first birds I noticed were the many Killdeer scurrying along the sides of the roads as we passed. Also on the roads were the occasional Horned Lark. Driving past the cornfields there wasn’t much in terms of avian life with the exception of the occasional Red-Winged Blackbird popping up from the low corn stalks or Barn Swallow flying overhead. The farm house was in a grove of trees creating a small forest island otherwise completely surrounded by fields. This small oasis was where the majority of the birds could be found. Black-Capped Chickadees, American Goldfinches, Downy Woodpeckers, Common Grackles, ad White-Breasted Nuthatches were routine feeder visitors and Rose-Breasted Grosbeaks and Baltimore Orioles were present but made fewer appearances.

The noisiest birds on the property were the House Wrens. They chattered from all sides of the house and occasionally perched out in the open, never for very long though. Some other loud species in the surrounding woods were the Great-Crested Flycatchers and Eastern Wood-Pewees. I could hear at least two of each species.

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Great-Crested Flycatcher

We drove a few miles down the county roads through the corn fields in order to get to some tennis courts in the small town of St. James. On the way, we stopped by a field where long grasses were growing and a small creek intersected the gravel road. This section of the road seemed to be the epicenter of bird activity as many Red-Winged Blackbirds were flying around the field and landing on the corn stalks that lined the edge of the field. A Belted Kingfisher suddenly perched up on a wire near the creek and an Eastern Kingbird landed in the middle of the road and caught an insect. At least two Dickcissel could be heard calling in the field. One of them ended up perching in a nearby deciduous plant.

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House Wren

We continued to the St. James tennis courts after watching the field for about ten minutes. Even when playing tennis I’m always keeping an eye on the birds. There were House Sparrows, Mourning Doves, and American Robins in the trees and other structures around the courts. Overhead there were six Chimney Swifts clicking and chattering.

In my limited time birding I came up with 26 species. None of them would be considered rare, but it was still a nice experience finding birds in the open fields of southern Minnesota.

Blue Grosbeak vs. Indigo Bunting

With summer upon us, some of the brightest colored birds in North America are nesting all across the country including the Midwest. Two of these birds that can be somewhat difficult to tell apart without knowing the field markings are the Blue Grosbeak and the Indigo Bunting. Both of these species are bright blue, frequently overlap in geographic range, and can be found around the same habitat. This means birders are likely to encounter both at some point. The good news is that there are some surefire ways to differentiate the two.

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Indigo Bunting

Size

As far as size is concerned, there is a discernible difference between a Blue Grosbeak and an Indigo Bunting. Blue Grosbeaks typically range between 15 and 16 cm while Indigo Buntings are between 12 and 13 cm. This means that in theory, an Indigo Bunting should never be as large as even a relatively small Blue Grosbeak. While it is hard to tell size on a single bird by itself, a side by side comparison shows this difference distinctly.

Blue Grosbeak
Blue Grosbeak

Range

The range of these two species differs slightly with much of it overlapping.

Blue Grosbeaks general range is as far south as Central America during the winter months and as far north as North Dakota in summer. They span from the west coast to the east coast and can be found readily in the southern states. While the Blue Grosbeak is widespread in the United States, their basic range does not typically go north of Colorado and Indiana with only a few individuals spotted annually during summer in states like Wisconsin. They do however appear farther north in the central part of the United States as they also summer in Oklahoma and the Dakotas.

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Blue Grosbeak Range

Much like the Blue Grosbeak, Indigo Buntings winter as far south as Central America. This bright blue bird also inhabits most of the southern United States with the exception of parts of Arizona and Texas. It is also notable to note that the Indigo Buntings range seems to skip over western Mexico. Unlike Blue Grosbeaks, Indigo Buntings make their way much farther north in summer as they are found in every state east of Montana and even southern parts of Canada.

Indigo Bunting Range
Indigo Bunting Range

Bill

Bill size is a solid way to differentiate between these two species. The indigo Bunting has a relatively small, conical bill while the Blue Grosbeak has a comparatively larger bill. In addition, The Indigo Bunting has a completely one colored gray/silver bill. The Blue Grosbeak often sports a two colored bill with a darker gray on the upper mandible and lighter gray on the bottom mandible.

Blue Grosbeak
Blue Grosbeak

Field Markings

Though both of these birds are a very similar shade of blue, there are some differences in pattern and coloration that go a long way in identification.

The Blue Grosbeak has a small black mask near the base of the bill going over the eye that the Indigo Bunting lacks. They also have very distinctive rusty wing bars that serve as an extremely reliable field marking. Female Blue Grosbeaks lack the deep blue of the males (instead they are a dark tan/light brown color) but still have the same rust colored wing bars.

Indigo Buntings are almost entirely blue with some of their only other coloring being a varied gray to black on their wings. They do have a very small amount of black near the base of the bill but not nearly to the degree that the Blue Grosbeak does. Females are a lighter shade of tan than the Blue Grosbeak and lack the wing bars of the Blue Grosbeak females.

Indigo Buntings
Indigo Bunting

These two species often co-exist in the same habitat and overlap readily in the United States and Mexico. Even in ranges where only one of these species would be expected. It is good to know the ways to tell them apart just in case.

We hope you found this article helpful. Please feel free to contact us to suggest other similar articles or provide feedback.

Spring Green Preserve – Wisconsin’s Desert

Today Derek and I headed out to Sauk County to look for some birds, reptiles, and insects at one of the most unique environments in the state: Spring Green Preserve. Spring Green is located in the south central part of the state and is one of the most arid places in the state. “Wisconsin’s Desert” is complete with sand, cacti, and numerous flora and fauna that are found nowhere else in the state.

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We made the two hour drive and arrived a little after 7 am. We were immediately greeted by swarms of small insects buzzing around our faces. For the early part of the morning the small gnats and flies were nearly insufferable but we pressed on. We heard several loud calls coming from the Prairie as we broke the thresh hold between the parking area and the preserve. The preserve itself is relatively small with only one trail that leads from the lot into the large ridges that prevent moisture from getting to the sandy ground. One call that stood out was that of the Dickcissel. This has been a good year for the species and Spring Green is perhaps one of their greatest strongholds in Wisconsin. It seemed like every short tree and shrub had a Dickcissel on top.

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Dickcissel

If not a Dickcissel on a particular tree top it was a Lark Sparrow. Lark Sparrows can be found in other counties but they are more seldom reported. At Spring Green they are extremely numerous. This gave us a great opportunity to watch some of their behavior. The sparrows were constantly chasing each other from tree to tree and gathering large grasshoppers and other insects. There was even one Lark Sparrow that nonchalantly hopped on the trail just a few feet ahead of us gathering insects and acting oblivious to our presence.

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Lark Sparrow

One other very loud species on the Prairie was the Grasshopper Sparrow. These sparrows earned their name from their insect-like buzzing noise they make as well as the fact that they grasshoppers make up a large portion of their diet. Grasshopper Sparrows belong to a group of elusive sparrows known as Ammodramus Sparrows. This group of birds likes to skulk in tall grasses and other plants. They are often difficult to find, but these Grasshopper Sparrows perched up very nicely for us to view.

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Grasshopper Sparrow

After a while we were joined by Rob Pendergast and continued searching. By the time Rob arrived a nice breeze had picked up over the preserve and a lot of the insect activity had subsided. We walked back the same way on the trail we had paced back and forth on earlier and came across one of the local reptiles: a Blue Racer. Blue Racers are among the fastest snakes in North America. They can be found in prairies and Oak Savannas in the western half of the state. This one was lazily slithering near the trail and eventually climbed a small tree.

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Blue Racer

Also present near the same area was another quick reptile: The Prairie Racerunner. Much like the Blue Racer, these lizards have incredible speed (up to 18 mph.) We found them quickly running across the sand trail and sunning themselves on rusted sheet metal.

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Prairie Racerunner

As we walked the trail we picked up some other bird species that call the preserve home. An Indigo Bunting sang loudly from the largest dead tree in site and Orchard Orioles created a chorus along with Rose-Breasted Grosbeaks on both ends of the trail where more trees were growing. Many other common birds such as Mourning Doves, Robins and Blue Jays were in the area as well.

Having thoroughly searched for all avian activity in the area, we turned our attention to some unique invertebrates. Spring Green is known by a proud few for its Tiger Beetles. Nine (possibly 10) species of this small but veracious predatory insect make Spring Green their home. We were able to find three species of them. The Oblique-Lined, the Festive, and the Big Sand. They would fly and sometimes run along the path we were walking. Much like everything else we encountered, the Tiger Beetles are extremely fast movers. So fast in fact that while they run after their prey they go temporarily blind until they stop moving.

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Big Sand Tiger Beetle

In all, we were pleased with out day in the desert. We missed out on two rare birds that were reported recently (Blue Grosbeak and Northern Mockingbird), but seeing the other interesting birds, reptiles, and insects made the trip well worth it. It’s not everyday we get to explore such a unique ecosystem in our home state.

Retzer Nature Center In June

Yesterday I took a quick walk through one of my favorite local birding locations: Retzer Nature Center. Retzer is on a relatively small piece of land but has many types of habitat including deciduous woods, coniferous woods, and prairie. Many different bird species call Retzer home so birding there is always an enjoyable experience.

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East side of the hill

From the parking lot I started out walking south into the deciduous forest. After a short time I got eyes on a few Indigo Buntings calling in the trees and heard a few Blue-Gray Gnatcatchers. The wooded area has not been as good in recent years but Blue-Winged Warblers, Common Yellowthroats, and Eastern Towhees can often be found there.

I eventually walked out of the forest after tallying a few species and started up the large hill on the eastern part of the nature center. This area opens into an oak savanna with trees periodically pooping up out of the golden grasses. This is where I usually find the most bird numbers and diversity. Today was no exception. The first bird I spotted was a Field Sparrow hopping around the branches of a small Oak tree. Near the sparrow was a very chattery House Wren perched on a dead branch. Almost directly above me was an Eastern Kingbird that was kind enough to pose for a few photos.

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Eastern Kingbird

I continued up the hill further where I found more Field Sparrows and heard some Eastern Bluebirds. One surprise was an immature Orchard Oriole perched on one of the top branches of a dead tree. Before this, i had never seen that species present before at the nature center.

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Clay-Colored Sparrow

I stopped at a bench at the top of the hill and listened for other field birds. I could easily hear the call of at least three Henslow’s Sparrows and the buzzing of Clay-Colored Sparrows. none of the Henslow’s decided to make an appearance but they are still fun to listen to. Off in the distance, the distinctive metallic and bubbly call of the Bobolink could be heard. They are annual nesters at Retzer and one of my favorite birds simply because of their interesting call. I was able to spot one up at the top of a medium sized oak.

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Bobolink

I continued north on the hill to where a tractor lane intersects the trail. This is where I heard two calls out to west that I recognized as Dickcissel. Dickcissel are another species that has been known to nest at Retzer. They are very sensitive when nesting so I didn’t get too close. Fortunately one was calling from a tall tree that could get a clear view of.

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Dickcissel

After watching the Dickcissel for a few minutes I moved into the trail that cuts through the tall green grass on the east side of the hill. Here there were three more Henslow’s Sparrows calling, Tree Swallows, Savannah Sparrows, and more Bobolinks calling than I could keep track of. They were constantly flying up out of the grass while making their bubbling call and landing back in a different spot only to disappear completely.

I eventually headed out of the prairie and into another small wooded area near the parking lot. Here I heard and eventually caught a glimpse of an Eastern Towhee.

I left with a total of 24 species after just an hour of birding. Not a bad day at all bird wise and a great day to be out at one of my favorite local nature centers.

Kettle Moraine State Forest Oak Savanna

On Monday I traveled a few miles south to the Southern Unit of the Kettle Moraine State Forest in hopes of finding some interesting reptiles. While no snakes or lizards were anywhere to be found, there were some quality birds in the area.

I started on a horse trail that led into the woods and eventually opened up into a grassy area. This savanna had numerous small oak trees along with copious amounts of sand and small shrubs. As I walked I picked out a lot fo the more common summer bird sounds such as Yellow Warblers, Eastern Wood Pewees, and Common Yellowthroats. While I was turning over some logs close to the savanna, a bird flew in my direction. Though it was moving quickly I could see a long white tipped tail. Piecing together the habitat with the field marks I saw, my first thought was Lark Sparrow. Lark Sparrows are not common in most parts of the state so i wanted to get a better look to be sure.

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Lark Sparrow

I saw another bird take off and join the first bird in flight. the two landed near train tracks and i was able to get a better view. The two birds were in fact Lark Sparrows! Feeling excited I snapped a few photos and moved on.

Around the prairie I heard several Chipping Sparrows, Song Sparrows, and Field Sparrows but nothing of great note. I eventually moved into a more forested area and had my second solid sighting of the morning when two Scarlet Tanagers flew past me and landed in the nearby trees. Scarlet Tanagers are by no means rare, but I hadn’t seen or heard one yet this year which made these bright birds a welcome sighting.

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Scarlet Tanager

After wondering the trail for a little longer without finding any interesting birds or reptiles i headed home. The end of May ushers in the warm summer months when most of the birds have already migrated through and the nesting species are still left. Fortunately, many of the most interesting birds in the state are Wisconsin nesters.

Lions Den Gorge Count Day

Saturday was the Wisconsin spring bird count. That meant that almost every birder in the state was out and about seeing what species they could find. Lucky for all of us it turned out to be one of the most beautiful days of the year thus far with temperatures in the high 70s.

I met up with Bill Grossmeyer at Lion’s Den Gorge in Ozaukee County to help out with the count. As soon as I arrived, bird calls were coming from seemingly every direction and small shapes were moving around in the tree tops. We quickly picked out several warbler species including yellow, Black-Throated Green, Yellow-Rumped, and Palm. Also present at the start of the trail were Swamp Sparrows, Song Sparrows, and a single Lincolns Sparrow.

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View from the top of Lion’s Den Gorge overlooking Lake Michigan

Farther along we encountered pockets of different warblers including Nashville, Black and White, and several singing Northern Parulas making their classic “zipper” call. We were also able to locate several Field Sparrows, Baltimore Orioles, an indigo Bunting, and one incredibly vocal Brown Thrasher.

We took five minutes out of looking for warblers to check out a more marshy area of the gorge. This proved to be a great decision as we found several White-Throated Sparrows, White-Crowned Sparrows, and buzzing Clay-Colored Sparrows. This area also had a singles Northern Shoveler and Ring-Necked Duck.

Our best find of the day came as we walked out of the marsh and back onto one of the more forested trails. suddenly a Cerulean Warbler popped up from some lower bushes and appeared no more than ten feet in front of us. Cerulean Warblers are not rare in all parts of Wisconsin but they can be difficult to find in many places. The bird gave us great looks as it fluttered from branch to branch calling.

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Cerulean Warbler

After watching the Cerulean Warbler for some time we headed out to try some other locations around Ozaukee County. On our way out we encountered an Orange-Crowned Warbler and several Orchard Orioles. We also heard the teepa teepa teepa call of a Great Tit. As it turns out, this sighting is the farthest south recorded in Wisconsin.

When we finally left Lion’s Den, we found that there were not nearly as many birds in other areas sch as Coal Dock Park in Port Washington or the adjacent bike path. As a result, after about an hour and a half hiatus without picking up anything new but Common Terns, Forster’s Terns, and an Ovenbird we headed back to Lion’s Den Gorge.

Upon arriving the action immediately started up again with several Blackburnian Warblers near the entrance of the trails. In this same area we also got great looks at an Orchard Oriole.

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Orchard Oriole

After walking around for another hour, things started to slow down and most of the birds that had been moving around in the morning were suddenly gone. We decided to call it a day and headed back home, feeling pretty excited about the first really good day for warblers this spring.

White-faced Ibis vs. Glossy Ibis

This spring has been good for Ibises in Wisconsin as several have already been reported. Ibises are rare Wisconsin visitors that usually make their appearance during migration and only rarely breed in the state. There are two species of Ibis that occasionally pass through: the White-faced Ibis, and the Glossy Ibis. While both are rare, the Glossy is the more uncommon of the two in our state.

Ibises are generally not difficult to identify. They are relatively large birds with bright reddish-brown bodies, complete with iridescent green wings, long legs, and a long, curved bill. However, while an Ibis itself is distinctive, the differences between the White-faced Ibis and the Glossy Ibis can be tricky as some of the defining details are minor.

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Glossy and White-faced Ibis at Horicon Marsh

Seasonal Changes

The White-Faced and Glossy Ibis are both more distinctive during breeding season when their markings are more prominent. In fall, they become almost impossible to distinguish. For this reason, we will focus on breeding season identification tips.

Size

As far as their size, a Glossy Ibis is on average the larger of the two species. Glossy Ibises can range anywhere from 18.9-26 inches. A White-faced Ibis is typically between 18.1-22 inches. While there certainly is a size difference, given their averages it would still not be out of the realm of possibility for a White-faced to be larger than a Glossy. For that reason, this feature alone should not be used to identify.

Range

It is of course not uncommon for birds to stray from their normal range. However, range for these two species can be used as a general guideline. The White-faced Ibis can be found all across the southwestern part of the United States and even reaches as far north as Montana, and as far East as Florida. The Glossy Ibis on the other hand is usually found the Atlantic Coast and in Florida. Therefore, if an Ibis is found in the western states, it is usually a White-faced, however, that is not always the case.

 

Leg Color

Leg color is a solid species indicator during breeding months. The White-faced Ibis has brightly colored legs ranging from pink to red. The Glossy Ibis on the other hand has dull grayish legs. This feature can be tough to pick out depending how far away the bird is, but even at distance the pink tint of the White-faced Ibis’s legs can be seen.

Eye Color

Eye color is another indicator of distinguishing these two species. The White-faced Ibis has a bright pink eye, whereas the Glossy Ibis has a dark black eye. Again, this feature is much easier to observe when the bird is close but can still be seen with a scope or high powered camera.

Notice the leg and eye color differences in the images below.

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White-faced Ibis
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Glossy Ibis

Facial Pattern

The best way to tell the White-faced and Glossy Ibis apart is by their facial patterning. The White-faced Ibis has a namesake white mask that starts near the bill and goes completely around the eye. This thick white mask is unbroken by any other colors. In addition, there is pink coloration going from the start of the bill up to the eye.

Glossy Ibises have a much thinner pattern on their face going near the eye but in most cases not going around it completely. This gives the pattern a “broken” look. In addition, as opposed to the white and pink face of the White-faced Ibis, the outer color on the face is a light blue and the inside color is the same as the rest of the head.

The image below shows a great side-by-side comparison of the two species. Note the facial differences with the Glossy behind the White-Faced.

Glossy and White-faced Ibis
Glossy and White-faced Ibis

These identification tips should be enough to correctly determine the species of a breeding plumage Ibis in Wisconsin and other Midwest states. We hope you found this article helpful. Please feel free to contact us to suggest other similar articles or provide feedback.

 

 

 

Kettle Moraine State Forest Bobwhite

Derek and I went out to the Kettle Moraine State Forest to see if we could find any interesting birds. We made it out there at around six pm and started walking the ski trail near Mackey Picnic Area.

The forest was incredibly quiet. The only birds that we heard or saw were American Goldfinches, Brown-Headed Cowbirds, Black-Capped Chickadees, and a single Blue Jay.

After having little success at that location we went to the field closest to the Ottawa Lake Campgrounds in search of sparrows and other grassland birds. We immediately heard the quirky song of a Brown Thrasher singing in a nearby tree as well as an Eastern Towhee in the distance. Several Field Sparrows were also in the area and occasionally perched up in the snags.

Brown Thrasher

While walking one of the paths in the field, we came across the best bird of the day: A Northern Bobwhite. Neither of us had ever seen a Bobwhite in the wild and we were extremely excited to see it foraging in the short grasses.

Most Bobwhites found in the state are part of populations that were released or escaped captivity. In fact, some people estimate that there are no Bobwhites left in Wisconsin that are not related to a bird that was at some point captive.

Northern Bobwhite

After watching the Bobwhite for about five minutes we continued walking the field. All of the sudden, Eastern Meadowlark calls started coming from seemingly every direction. We were finally able to get a visual on two birds chasing each other around and landing in the larger trees. Also in the area were a Palm Warbler and a Chipping Sparrow.

Eastern Meadowlark

Although we didn’t find a very high number of species, any day you find a life bird is a pretty solid day!