Why do they do that, Hugh -- migrate vertically up to or near timberline in August? Cyndy Kulp Colo. Springs
On Aug 14, 11:02�am, "Hugh and Urling Kingery" <[email protected]> wrote: > � � � � � � Comments on the Cobirds thread about timberline wanderers, that > started with the Loggerhead Shrike. > > � � � � � � A variety of species migrate vertically up to or near timberline > each August. Many of us have observed Swainson's Hawks and Prairie Falcons, > and I remember watching harriers (and Barn Swallows) migrate over Guanella > Pass (in early September). We see more Mountain Bluebirds up high in August > than the number that breeds at timberline; both White-throated and Black > Swifts cruise far above timberline; and hummingbirds often venture into the > alpine flower fields. > > � � � � � � While I haven't encountered a shrike in the alpine zone, I do > remember a rather surprising clutch of a couple of Pygmy Nuthatches. Others > on �my list: American Dipper at 12,000 feet in the San Juan Grenadier Mtns.; > Pinyon Jays at 13,000 feet on Mt. Meeker and Clark's Nutcracker at 14,000 > feet on Mt. Harvard; and at varying locations from timberline to 12,000 feet, > Cooper's Hawk, Red-breasted Nuthatch, Green-tailed Towhee, flocks of Chipping > Sparrows, Gray-headed Juncos, and Franklin's Gulls; Baird's Sandpipers in > migration at Fish Lake (12,000') in the South San Juans. > > Hugh Kingery --~--~---------~--~----~------------~-------~--~----~ Colorado County Birding: http://www.coloradocountybirding.com/ You received this message because you are subscribed to the Google Groups "Colorado Birds" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.as/group/cobirds?hl=en -~----------~----~----~----~------~----~------~--~---
