21 August 2017 – Ruby-throated Hummingbird

I started my walk to class on this first day of the fall semester finding this window-killed Yellow Warbler at the Food and Agricultural Products building.

Screen Shot 2017-08-21 at 4.49.16 PM

After class, I ran my normal survey, finding this Ruby-throated Hummingbird (HY male with fat = 1) at the southwest alcove.

 

Advertisements

7 May 2017 – Indigo Bunting and trapped Yellow Warbler

With special guest stars James O’Connell and David Mallen, today’s survey turned up a male Indigo Bunting and a trapped Yellow Warbler at the main north entrance. (No photo of the warbler; it was a male.)

Screen Shot 2017-05-19 at 9.05.53 AM

Let’s take a closer look at that Indigo Bunting:

 

The multiple obvious molt limits on this bird illustrate two generations of feathers on the same individual, some of which grew in last summer and some which have come in quite recently.  This confirms the age of the bird as second year (SY).

12 September 2016 – Yellow Warbler

The southwestern alcove was again the site of a window-killed bird this morning but, again, it did not appear to have struck one of the treated panes of glass.

The unfortunate victim was an after hatch-year (AHY) female Yellow Warbler, and the ants had gotten to her, big time.

16 September 2015 – Yellow Warbler

I was not able to check the NRC yesterday (9/15), but that’s when I think this Yellow Warbler actually came in and met its end in the northwestern alcove.  I think it’s a HY male; fat = 2. I left the bird in place for a scavenging trial.

Screen shot 2015-09-20 at 2.18.29 PM DSCF8769 DSCF8770DSCF8768

20 August 2015 – Yellow Warbler

Yesterday’s powerful cold front gave us this morning’s Octoberish morning, and a big flight of migrants last night. Check out this explosion of migrants in the Plains from around 10:30 last night:

Screen Shot 2015-08-20 at 9.13.06 AM

At least one of those migrants, a HY-U (prob female) Yellow Warbler, made it no farther than Stillwater last night.  She was in great shape with fat = 2.

DSCF8662 DSCF8663

Screen Shot 2015-08-20 at 8.49.22 AM Screen Shot 2015-08-20 at 8.49.49 AM Screen Shot 2015-08-20 at 8.50.43 AM Screen Shot 2015-08-20 at 8.58.17 AM

11 May 2014 – Two Indigo Buntings and a Yellow Warbler

The onslaught continues.

This morning, the Clay-colored Sparrow was in place and had not been touched.  I was happy to not see a Gray Catbird, Painted Bunting, or Wilson’s Warbler limp on the ground, which means that I was at least successful yesterday in getting those birds away from the building.

There were, however, three new casualties today.  First, there were two female Indigo Buntings, one in the southeast alcove and one along the north facing wall.  I collected one and left the other in situ.  The one I collected was an ASY female with fat = 2.

Image

Female Indigo Bunting #1, collected:

ImageImage

Female Indigo Bunting #2, left in situ:

ImageImage

In the southwestern alcove, I found this gorgeous ASY male Yellow Warbler.  This one had no visible fat, making me wonder if he exhausted himself as a trapped bird rather than dying suddenly from impact trauma.

Image

Image

Here they are together prior to internment in my freezer:

Image

 

22 September 2013 – Yellow Warbler

This hatch year female Yellow Warbler was cut short on her first southbound migration.  Fat = 2. She was a classic “confusing fall warbler” with an olive back and yellow breast, but the clincher for her identification was the pattern of yellow inner vanes on her tail feathers.  This is unique to Yellow Warbler among the North American parulids.

Image

ImageImageImageImage