These Broad-winged Hawks Buteo platypterus were just a fraction of the c.35,000 we witnessed lifting off and migrating south at lunch time in McAllen, south Texas, on October 02, 2016:
CLICK HERE to see a short video of this spectacle, shot while standing on the sidewalk in a neighborhood of McAllen.
We saw at least four dark-morphs - here is a shot with two next to each other:
A closer look at a dark morph adult:
On this one the rufous-orange of the
vent/lower belly and the underwing coverts creates the impression of a "rufous-morph" individual!
