Hi again - Thanks to everyone that responded. The consensus is that this is a juvenile Red-Tailed Hawk, which I considered at one point, but wasn't sure about due to my initial observations. When I first saw it, it looked smaller than the other Red-Tails I had been watching a short time earlier, and it didn't have any red coloring in the tail. Also, it didn't have the tail fanned out when flying, looking more like a falcon at first. I watched it sitting in the tree for a few minutes, and the white spots on the back made me think Red-Tail, but the tail feathers looked different than what I thought they should be for this species. These darn juveniles always give me problems! I know that there is a Harlan's hawk that frequents the north side of Walden, perhaps this one is an offspring.
Anyway, mystery solved. I obviously need to spend more time studying these birds, there is so much variation in the Red-Tails that it drives me nuts! Happy birding - Jeff Parks Boulder -- 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 cobirds+unsubscr...@googlegroups.com. To post to this group, send email to cobirds@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/cobirds/a346efc5-f37c-4fee-970d-dbe447dc07d3%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
