Birding has played second fiddle to life this summer, but I got out to Eagle Marsh on Sunday. I had a few species on my mind that I wanted to see, but when I got there it was obvious that the sheer number of individuals would be the highlight. Post-breeding dispersal is on in the Midwest.
The first bird to catch my attention was a young, begging Red-tailed Hawk that sounded remarkably like a Ring-billed Gull.
As I hiked down the Towpath Trail, I became increasingly aware that there were thousands of birds around. Most of them were swallows, and of those, 99% were Purple Martins. Two huge flocks were congregating on electrical transmission towers at either end of the preserve, with uncountable birds buzzing and swooping around in between. I estimated at least 500 martins to trip the eBird filter, an accomplishment always good for a birder badge of pride. I have seen most of the other swallow species flock like this in late summer, but never PUMAs. A good half looked like first summer birds.
A few other species mixed in with the flock, mainly Barn Swallows. But I was able to pick out a small group of Northern Rough-winged Swallows clustered to themselves off to one side of the power lines.
I hiked up the trail to the newly created levee that forms the “continental divide” between the Mississippi and Great Lakes watersheds. When this was completed a year or two ago it made a new impoundment between Eagle Marsh and the neighboring Fox Island preserve to the south (the trees in the photo above are in Fox Island).
I spent some time scanning the new impoundment to see what might be around. The water was much too high for shorebirds, but a somewhat unexpected sighting was a family of Common Gallinules, with mom and five chicks. I have only seen one other bird in Allen County before, so it is cool to know they are breeding here!
Eagle Marsh is a pretty good stopover for Monarch butterflies, and the Little River Wetlands Project holds an annual Monarch Festival there each year. So it was a little surprising to see so many Viceroy butterflies out and about. In addition to their smaller size, the stripe through the hindwing is the best way to tell Viceroys from their bigger sisters.
Try as I might to tread softly, I kept startling Great Blue Herons from either side of the levee. If I were to guess what the devil sounds like, Great Blue Heron calls would be a good bet.
One of them angrily dropped a feather as it fled before me. Here is my size-13 cankle for size comparison.
Before I left, I stopped to observe a fishing Double-crested Cormorant. Plenty of these birds were around, but a group of his buddies on a partially submerged log did not yield any increasingly common in Indiana Neotropic Cormorants.
It was such a nice day that I took a long detour home to look for Blue Grosbeaks. I didn’t find any, but I did get my waaaaaay overdue first of the year American Kestrel. It plus the martins and gallinules meant three new green species, bringing my total to 131 for this year.