The five immatures showed brownish on the crown and nape, with red only around the eyes. Their wing coverts were extensively golden brownish-buff (adults had blotchy, scattered patches of dark rusty brown wing coverts), and their bills were paler and yellower brown. A few adult birds in the flock of 19 were significantly smaller with proportionately shorter legs and shorter bills but with similarly patterned crowns and contrasting white cheek patches to the larger birds. Identification to subspecies or origin would be difficult given such small birds among typical group of "tabida" Sandhill Cranes. Birds from more northerly populations (esp. the highest latitude breeders) average smaller, but I suspect the size difference I saw was due to individual variation.
This flock is only a short distance from where eleven were found last year by Trevor Persons. Those remained until the 1st or 2nd of December, with a similar-sized group seen over a hawkwatch in southwest Massachusetts (Blueberry Hill in Granville) in the day following the departure of the Norridgewock group.
Louis Bevier
Fairfield
-- Maine birds mailing list
maine-birds@googlegroups.com
http://groups.google.com/group/maine-birds
https://sites.google.com/site/birding207
0 comments:
Post a Comment