The Purple Martin (Progne subis) is generally recognised as being the largest North American swallow. Its body measures about 20 cm in length and it has a wingspan of 39-41 cm. The Purple Martin is an incredibly acrobatic flyer. Today they are commonly found nesting in backyard birdhouses. The Purple Martin has been making use […]
New research conduced by a team from the Arizona State University revealed with startling certainty that the color of a bird has a massive effect on its physiology. During the course of the ...