I saw a gray phase gyr on the South Valley Loop Trail, about 3/4 mile south of Arthur's Rock Parking Area. We were on east side when it came over the small cliffs to east on the west side of Horsetooth Reservoir. It flew across the valley and seemingly landed back in a nook on the opposite side of valley. No underwing dark feathers or dark cap and moustachial stripe (faint one), and size pretty much eliminated the two other possibilities. The belly was mostly white and only the flight feathers had darker gray tones. The back was gray and it was a big falcon with broad wings. On the way back, I tried to find it but it escaped to an unknown area. i assume this is the Trilby Falcon. Once it flew up and over us, it dropped down to about six feet off the ground crossing the valley. Be on the lookout around Horsetooth for this great bird.
Tom Hall Fort Collins -- You received this message because you are subscribed to the Google Groups "Colorado Birds" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/cobirds/4adb2615-feb6-4a61-a02d-e87f1f55f266n%40googlegroups.com.
