Dave, Jen and other OBOL folks, This is a "normal" band for Cooper's and other large birds (particularly birds of prey). It's a "lock-on" band, which has a tab where the other end of the band folds over it and is crimped into place. These birds have the ability to pull open the round "butt-end" band and, well there goes the band. They can not open the lock-on bands.' Have banded just one Cooper's myself, slim chance this is the one. Dennis ----- Original Message ----- From: David Irons To: Jen Sanford ; OBOL Oregon Birders Online ; OBOL obol Sent: Sunday, August 03, 2014 1:30 PM Subject: [obol] Re: Banded Cooper's Hawk Jen, Nice photos. One thing that seems odd is the shape of the band, which appears to be either flattened on one side or have some sort of tab on it. Typically, a standard aluminum band is perfectly circular with no tab or flat edge. This looks like a normal USFWS band that was pinched and flattened on one side to make it fit more snugly on the hawk's leg. To my knowledge this is not a standard banding practice. Perhaps Mike Patterson or Dennis Vroman can weigh in on this. Dave Irons ------------------------------------------------------------------------------ Date: Sun, 3 Aug 2014 13:04:55 -0700 Subject: [obol] Banded Cooper's Hawk From: jjsanford@xxxxxxxxx To: obol@xxxxxxxxxxxxx; obol@xxxxxxxxxxxxxxx This morning I noticed a Cooper's Hawk hanging out in my yard, and after I took a few photos I noticed it had a band on its right leg. I can't read anything on it, though there's one thing (could just be the light) that almost looks like a "3." I uploaded three unaltered photos of the bird to Flickr, one with the leg raised to see a different side of the band, if anyone wants to try to read it. https://www.flickr.com/photos/stoptellingmeitsokay/14634361307/ The hawk spooked when I turned off the fan in the window, and my neighbor's cat also spooked from nearby. Interesting to see a native predator compete directly with a nonnative predator for my feeder birds- or perhaps they were hunting each other. I dream of the day a hawk carries that cat off... Good birding, Jen Sanford Portland