10,000 Birds
JUNE 15, 2011
Many avid fans even wear bracelets… But then again, boobies as a group are pretty spectacular and first among equals must be the booby with the blue feet. As is often the case in birds, teenagers, and other living creatures, these charismatic colors play a prominent role in the booby’s breeding rituals.
10,000 Birds
DECEMBER 6, 2016
Each family group starts with a description of what traits are common to the species within the family, its representation in Northern Central America, and other interesting, relevant facts. Each species account lists the basics—common name, scientific name, measurements in inches and centimeters.
10,000 Birds
APRIL 1, 2014
In Sibley Two, the in-flight images literally fly across the page in slight diagonals, with the full-bodied images are presented below in a parallel order (meaning we see the same bird–fresh juvenile, worn juvenile, 1st year, Adult breeding, Adult nonbreeding–in the same part of the page for each species).
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