(c) Greg Saulmon 2013

On cue, it seems, the Cooper’s Hawks have started their annual fall migration into the city. The small, agile hawks disappear from downtown in the spring, but when the leaves change the Cooper’s become a common sight through the fall and winter.

I spotted one Cooper’s Hawk chasing pigeons near the city library this morning. Then, another — or possibly the same bird — hunting in and around Heritage State Park. Above, the hawk takes flight from a factory building on Appleton Street.

Outside the library, near the corner of Maple and Cabot streets, I found this Yellow-rumped Warbler flitting about in a tree:

(c) Greg Saulmon 2013

I’d seen a warbler here a week ago but wasn’t able to get a good enough look for an identification.

In Heritage State Park, House Finches were feeding in the berry trees outside the visitor’s center:

(c) Greg Saulmon 2013

I also found a Golden-crowned Kinglet mingling with the finches, but the tiny bird stayed too hidden among the branches for a photo. Now that I’ve spotted it, though, I’ll be making regular checks to see how long it stays.