I. Thatcher Woods Last Monday

The Oak Park Bird Walk group met twice this past week at Thatcher Woods and I took way too many photos on both days. We were there Monday morning and again on Saturday morning. Though fall warblers were our focus, we had some good looks at other birds. The warblers are quite challenging here as they can be too far away even for my long lens, so I often have to piece together some not-quite-in-focus parts of birds for identification.

Below is a case-in-point for a bird barely seen on Monday. It was a Northern Parula. You can click on the photos to get a better idea of where the bird is in the leaves.

I caught a glimpse of a Red-tailed Hawk moving through the woods.

We went out to the field and saw some deer running across it.

There were distant, backlit woodpeckers. Below, a Northern Flicker, a Red-headed Woodpecker and a Northern Flicker flying past a Red-bellied Woodpecker.

And then, capturing our attention for quite a while, a Merlin arrived and perched likely in the same tree, and may even be the same individual we saw last year.

White-breasted Nuthatches are more often heard than seen.

The same could be said for a Red-eyed Vireo except that they’re not singing in fall migration. We managed to see this one briefly.

Eastern Bluebirds were abundant that day.

Below, an Eastern Wood-Pewee, and then the same bird with a White-breasted Nuthatch to its right.

It was delightful to see a couple Chipping Sparrows.

Just when we had about given up on warblers, we started to see some more.

Tennessee Warbler

There was a Bay-breasted Warbler that wouldn’t stop posing.

I was going to attempt to do Saturday’s visit as well in this post, but it’s already long enough, so I’ll be back with Saturday’s photos right away, and then a subsequent visit to Riverside the same day. It’s hard to keep up, all of a sudden!

I will be back with more confusing fall warblers. These two are often mind-boggling to separate.

Bay-breasted Warbler

For comparison purposes, a Blackpoll below.

Blackpoll Warbler

My Reward for Taking Too Many Pictures

I went to the Riverside trail on October 15. It was extremely cloudy and I had no idea what I could muster photographically under such conditions. I walked as far as I was going to go in one direction along the river and then turned back, and found a very green-looking warbler foraging low in front of me. When I got home to review my photographs, I could not for the life of me figure out what it was. I could only surmise what it wasn’t. The pale-looking eyebrow, the darker green primaries didn’t fit the Orange-crowned Warblers I was used to seeing.

After a good night’s sleep it occurred to me that perhaps the way to approach the bird’s identity was to look closely at the bill shape and size. Color and feather arrangement might seem changeable in a photograph but the bill shape would be constant. And that led me to thinking this was a Mourning Warbler.

As it turned out, when I opened my copy of The Warbler Guide, I found one small photograph that exactly matched my bird. She is a first-year female Mourning Warbler. I was excited as it has been years since I’ve seen a Mourning Warbler altogether. I added some of my photos to my ebird report and made the email-generated Cook County Rare Bird Alert (“RBA”) – I guess she’s a little late making her way south.

A distant Northern Flicker accented the cloudy background.

I have really become familiar with Orange-crowned Warblers this fall. And while I’m looking at bill size and shape, this species has a distinctly small, sharply-pointed bill. Some photos of an Orange-crowned Warbler are below.

For comparison, below are some more photographs of the Mourning Warbler.

Fall is a good time for woodpeckers.

Red-bellied Woodpecker
Orange-crowned Warbler

Fall is also a good time for squirrels and nuts…

A cloudy sky.

I have really enjoyed seeing Great Blue Herons here.

And Great Egrets were present too.

Only Mallards are showing up in the waterfowl department.

There are always some Northern Cardinals but this was not a good day to capture one.

The other bird that made the RBA was the Gray-cheeked Thrush below.

Golden-crowned Kinglets have been fun to follow the past couple weeks.

A fall tangle of leaves.

The river looks a little fuller than it did. I envision being unable to do this trail when we start getting a lot of rain…

Here are a few more photographs of the Orange-crowned Warbler who was my best model.

Below is a female House Finch.

I thought the Great Blue Heron against the clouds was worth capturing.

One more of a Northern Flicker…

I have been back to the Riverside trail twice since this cloudy day. We are finally starting to cool off. This morning the Great Egrets were all gone. To be continued… but now, I need to get ready for choir rehearsal.

One Species at a Time

Blackpoll Warbler, Columbus Park

Blackpoll Warbler, Columbus Park

I have been trying to catch up with my blog and everyone else’s to no avail, so this is a quick one-species-post offering in the meantime. Over the weekend I attended the Chicago Ornithological Society walk through Columbus Park on Saturday and then went to LaBagh Woods on Sunday. Two bird species outnumbered all the others. In the warbler category, the most prominent was the Blackpoll.

Blackpoll Warbler, LaBagh Woods

Blackpoll Warbler, LaBagh Woods

This is the time of year when Blackpoll Warblers don’t look like Blackpoll Warblers do in the springtime. They are often confused with Bay-Breasted Warblers. Sadly I don’t have any recent Bay-Breasted photographs to compare these with. Overall, they appear more yellow than they do black and white (as in spring).

BPWA LaBagh Woods

BPWA LaBagh Woods

BPWA LaBagh

BPWA LaBagh Woods

B{WA Columbus Park

B{WA Columbus Park

BPWA Columbus Park

BPWA Columbus Park

The cool thing about going through so many shots in different settings is that I learn more about the “gizz” of the species through the constant review. So that next time I see a Blackpoll Warbler walking down the street in a crowd I will be able to pick it out immediately!

BPWA Columbus Park

BPWA Columbus Park

I will be back as soon as possible with photos of the Most Prominent Species (not a warbler) from last weekend.