Monday 3 May 2021

[cobirds] Re: [wsbn] Brown-capped rosy finch behavior

A great option to suggest to friends that don't want to construct anything themselves is to purchase the Acopian Bird Savers already made for your problem windows!
Mary


On Mon, 3 May 2021 at 07:12, Bill Stevens <trailgod1947@gmail.com> wrote:
After much experimentation, I can suggest a cheap and effective window treatment -- hanging cords from the window.  I attach a link, but we made them ourselves by taking a piece of wood the length of the window, stapling on black thin parachute cord 3.5 inches apart and just hammering the board on to the window frame.  Have not had a bird strike since.


Katie Stevens
Moab

On Sun, May 2, 2021 at 12:41 PM Shep & Mary Harris <smnharris@gmail.com> wrote:
Glad you all were able to witness this behavior.
It's sad, but how incredibly interesting that they are so very social and bonded.
I was able to watch this behavior a couple times; once in Southern Africa with lesser striped swallows doing what looked like trying to revive their dead comrade and then a black-billed magpie gathering.  BTW - do you need any window treatments to prevent this from happening again? I have tons of samples.
Thanks for sharing!
Mary

On Sun, 2 May 2021 at 11:22, Bryan <bgieszl@hotmail.com> wrote:
Hello-
I've continued to host rosy finches in my yard at 8000 feet in Snowmass Village, up to 500 birds at a time of three species.  Today, unfortunately, two of the Brown-capped rosy-finches crashed into a window and died.  What followed was sad and remarkable.  For about the next hour, up to perhaps 200 of the finches gathered in the trees around the two dead finches.  They would descend and gather immediately around the birds, up to 100 at a time and linger next to the dead finches.  On occasion one of the finches would land on top of one of the dead birds, flapping its wings, reminiscent of copulation, or, as my 10-year-old son put it, "doing CPR."  This continued for about an hour or so.  I don't think that any of the attending birds were Gray-crowned or Black rosy-finches but I'm not totally sure of that.  It reminds me of the behavior of mourning elephants that linger around the body of a dead relative, as I've seen on nature documentaries.  My children took a brief video of the experience.  
Bryan Gieszl
Snowmass Village, CO

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