The main north entrance claimed a Lincoln’s Sparrow today – ASY-U and bulging with fat = 3. (Apologies for the lousy photos.)
The Mourning Dove was still there this morning, but it has been disturbed a bit and is now on its back.
New this morning was an unfortunate Lincoln’s Sparrow at the main north entrance to the NRC. As is so often puzzling, this was a bird that had to have been traveling south to hit the glass there even though the net movement of Lincoln’s Sparrows in April in Oklahoma is north.
This bird had 0 fat, was of indeterminate sex, and looks to be a SY. Note trauma to the bill tip indicating the point of collision.
Flight calls abounded last night as I walked the dog at least thrice. Those calls – little tsips! and tseeps! sounded to me like sparrows flowing from the north after three straight days of strong winds blowing from the south. A quick check of Paul Hurtado’s Nexrad radar birds page confirmed a big push in Midwest and the Plains:
Sadly, with that push came two casualties at the Noble Research Center: a Lincoln’s Sparrow (AHY-U with fat = 2) at the southwest alcove and a Common Yellowthroat (AHY-M with fat = 2) at the northwest alcove. (Apologies for the shaky portrait on the Yellowthroat – it looked clear on my phone.)
Although casualties continue to pile up in the west alcoves where I’ve treated several windows with ABC Bird Tape, it has so far appeared to be the untreated panes in those alcoves that are claiming the casualties.
Today I found a stunned Lincoln’s Sparrow on the south portico (no photo).
The bird couldn’t fly well, but it could fly. I decided to give it the “perch test” to determine if I should consider it to be a casualty or simply a trapped bird. Once able to catch it, I walked the bird south toward Edmond Low Library and found it a dense and secluded place to perch and rest where it might feel protected – or at least better protected than out in the open of the portico. I was pleased to see that the bird grasped a branch strongly and seemed to perch well. This one had me on the fence a bit, but I ultimately logged it as trapped. Though stunned, it seemed otherwise healthy with fat score = 2.
We finally had a decent cold front push through with the first nip of autumn in the air but, unfortunately, it also brought us the first Lincoln’s Sparrow casualty of fall. This was an AHY-U, bulging with fat (scored it a 3). This one is also the first window casualty in front of a treated window. I can’t tell if the bird flew into an untreated pane above the treated area or if it hit one of the treated panes. That’s a design flaw of my study, stemming from the logistical challenge of treating such large expanses of glass.
Lots of birds were moving through campus today. I found a pair of Brown Thrashers and this Grasshopper Sparrow flitting around the plantings in the southwestern alcove.
A crisp and cool night following a home football game made for lots of birds on the move and, evidently, quite a few coming into campus. I found this morning 3 dead Lincoln’s Sparrows: southwest alcove, southwest peninsula, and southern portico. I found a dead Grasshopper Sparrow at the northwest alcove.
Trapped birds consisted of a Song Sparrow that I pushed away from the southwest alcove, and a Chipping Sparrow in the rafters of the southern portico, apparently unable to figure out that flying down was the key to getting out.