[CT Birds] Sharpie vs Coop: grey tone distinction?
ashippee at snet.net
Sun Mar 23 13:13:47 EDT 2014
First the ID: thanks, Joe, for confirming my impression. The gray nape was a new mark for me.
Second the color: she wrote that in her experience with rehabbing, she had noticed darker colors on the Sharpies. It wasn't just the website; she had the birds in hand. Perhaps she had a male Sharpie and a female Coop.
Sent from my iPhone
> On Mar 23, 2014, at 12:24 PM, Joe Cala <joejr14 at aol.com> wrote:
> Is Crystal suggesting the darker back being a useable field mark and citing the source as that website--that shows 4 total pictures? I've never heard of the darkness of the back being an acceptable or useable field mark to separate Cooper's and Sharp-shinned...or even something to consider before. Trying to compare gray tones in separate pictures in different conditions creates an entirely new set of issues.
> While the darkness/coloration of the back can certainly be used to help sex the birds (males being darker deep blue, females being a colder gray/blue), again, I've never heard it being used to separate Cooper's and Sharp-shinned. Perhaps what Crystal is seeing and comparing are males and females?
> In any event, your bird in question is a Cooper's Hawk--and it just further goes to show that you don't try and ID accips based on a single (in this case, suspect) field mark. The bird has a large squared head, pale nape, and long tail which all makes this a Coop. Nothing about this bird looks Sharpie to me.
> This list is provided by the Connecticut Ornithological Association (COA) for the discussion of birds and birding in Connecticut.
> For subscription information visit http://lists.ctbirding.org/mailman/listinfo/ctbirds_lists.ctbirding.org
More information about the CTBirds