America Compassion Experiments Species 
10,000 Birds
APRIL 5, 2022
per cent of individuals of a species at a given time” and a vagrant bird as a bird that shows up outside of this range (p. There are many more factors than I imagined: compass errors, wind drift, overshooting, extreme weather and irruptions, natural dispersal, and human-driven vagrancy. other compass senses like the stars?–and
10,000 Birds
MARCH 8, 2011
Getting to know the subtleties in differences between closely related species takes years of dedication and practice. Thirdly, many species of shorebirds display such vast differences in their summer and winter plumages that it is always interesting to note how some birds in the same flock are in contrasting stages of plumage.
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10,000 Birds
FEBRUARY 28, 2011
Having never been to Brazil I can’t possibly speak as an expert in terms of what birds are covered or how well species that I have never seen are depicted. The species accounts are written by Robert Ridgely, one of the premiere neotropical ornithologists, and a veteran at writing excellent field guides. Talk about a win-win!
10,000 Birds
MARCH 18, 2011
Found throughout South America in ever-dwindling numbers these extremely beautiful birds – threatened by habitat destruction and collection for the wild bird trade – are often difficult to see and hard to find. The experience is one of the ornithological highlights in the world. That’s right – birds eating clay.
10,000 Birds
MARCH 18, 2011
This species is not only usually the earliest, but the most common. What’s remarkable about this species is what we don’t see here: the extremely long migration that this species makes, with some individuals traveling from Sub-Saharan Africa to Greenland and back every year.
10,000 Birds
FEBRUARY 4, 2014
He describes his experience in his introduction to Birds & Words : I took my first good look at birds as subject matter. I reduced all lines and edges to straights and curves (that’s all there are) and began to render with mechanical drawing instruments¬ ruling pen, compass, French curve, T-square, triangle.
10,000 Birds
MARCH 11, 2011
Frigatebirds (Fregatidae) Five species of frigatebird ply the planet’s tropical skies and seas. Ringer Cormorants and Shags (Phalacrocoracidae) Cormorants are more speciose than other families in the order; 30-40 species range widely on every continent and many islands. Corey Mar 12th, 2011 at 8:29 pm Now wait just one second.
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