Wilson’s warblers do not visit feeders, All About Birds reports, but if these tiny insectivores are out of luck in winter in what looks like nowheresville, with not an insect in sight, I can tell you, ...
In birds, an average of 16% to 18% of their muscle ... "You can't flap very much when you're close to the ground," Hedrick told Live Science. Of course, humans are at an evolutionary disadvantage.