On Saturday morning, I led what has now become my annual bird walk at the Chicago Portage. I have lost track of how many times I have offered this walk as an auction donation for Unity Temple Unitarian Universalist Congregation (UTUUC), but I suspect it’s been at least 5 years now if not more. When I scheduled the date for this walk back in the fall, I was looking for something closer to peak spring migration, totally forgetting that May 10 might likely be the annual Illinois Spring Bird Count, not to mention May 11 being Mother’s Day. To put it mildly, it was a busy weekend to schedule anything. But it was a beautiful day, as we have finally emerged from the cold, gloomy weather of past weeks, and this day proved to be rather unusual for birds as well.

I arrived at the Chicago Portage about 45 minutes early, to walk in a bit and get a feel for the morning. The first bird I photographed was a male Baltimore Oriole. These birds have returned in great numbers this year.

I started following a Nashville Warbler high in the treetops. I’ve seen a lot of Nashvilles this season, but you never know who might be up there with them.

For a moment, I was following another bird with the camera, but I didn’t realize what it was at the time. Too tired to properly review my photographs until Sunday, I then discovered that the bird was a rare individual. I had never seen anything like it before. It turned out to be a Lawrence’s Warbler, which is a hybrid species of a cross between a Blue-winged and a Golden-winged Warbler.

I was still following the Nashville after I took those photos of the Lawrence’s.

Then it was time to go back to the parking lot and greet the walk participants. After a few minutes, we walked in on the paved trail to the bridge closest to Harlem Avenue. And there we saw a muskrat swimming in the water.

There’s often a Yellow Warbler at this spot and we were able to hear it singing and see it flitting about in the trees. I managed a parting photo.

We were hearing Indigo Buntings singing, and soon we saw some. The first bird below was some distance away, but then we had better looks at the second, who is also at the top of this post.

Not too far down the dirt trail that runs parallel to the fence dividing the preserve from the property of the Metropolitan Water Reclamation District (MWRD), we stopped to see an Osprey fly in.

Almost immediately following the Osprey, a Bald Eagle flew in and landed in a tree across the water.

After watching the eagle for some time, the eagle left and we started walking again, and noticed a female Red-winged Blackbird down at the edge of the water.

A couple warblers came into view. The first is a Yellow-rumped Warbler, and the second, a Magnolia Warbler. Because they share the same color scheme, it can sometimes take a while to figure them out.

We encountered two male Rose-breasted Grosbeaks. They started having a bit of a territorial disagreement and the bird in the second photo chased after the other one.

Then we got a better look at a Magnolia Warbler. The black tip of the tail always gives this bird away to me even if I don’t see any other part of it.

The Osprey returned briefly.

Toward the end of our walk, we managed to see a female Blackpoll Warbler. I think this was the first Blackpoll I have seen this spring. After developing my photos, I confirmed the identification even further later with the bird’s orange feet showing in the photos, something unique to this species.

We encountered a Chipping Sparrow in the grassy portion that leads to the parking lot.

I also photographed a late American Tree Sparrow. Apologies to Liz if I remember that she correctly identified it as a tree sparrow, but I said it was too late. It’s not a very flashy-looking individual, but it is definitely a Tree Sparrow, recognizable by it’s bi-colored bill and further by the feather pattern of its wingbars. Anyway, getting back to my “too late” comment – that made it another bird that turned up on the Rare Bird Alert when I reported it with the supporting photo documentation.

After the walk participants left, I continued to bird a while. I found this interesting-looking male Baltimore Oriole.

A female Baltimore Oriole was down on the ground, likely finding nesting material.

A somewhat raggedy Black-and-White Warbler caught my attention.

I had run into Bob on the trail and we were birding together when an Indigo Bunting sang and displayed to us, making me wonder whether this individual knew us from last year. I also caught a photo as he flew down to the ground and have included it for a comparison of how the blue color changes depending on how the sunlight hits it.

That’s it for May 10. And now it’s time for a brief flashback. Here are a few photos from April 1. Yes, all the way back to the beginning of last month. My how things have changed.

An Eastern Phoebe had just arrived.

There were still Golden-crowned Kinglets.

And a Pied-billed Grebe was hanging out for a few days.

In an effort to keep up with the daily overabundance of birds and my overabundant attempts to photograph them, I think I will be including some more photos I never managed to post from the beginnings of 2025 spring migration. We seem to be all-in now for sunshine and warmer weather. I’ll be back as soon as possible.