Sometimes a bird is better off going it alone.  We know that big birds like waterfowl such as ducks and geese benefit from the flying-V. Waterbirds like pelicans and cormorants make the most of the chevron formation as well. But according to a study published in Nature, flying in a messy flock does birds like pigeons no favors. In fact, such flocks demand a higher energy cost and, based on my personal experience with Columba livia, a great tolerance for trash birds.

Written by Mike
Mike is a leading authority in the field of standardized test preparation, but he's also a traveler who fully expects to see every bird in the world. Besides founding 10,000 Birds in 2003, Mike has also created a number of other entertaining but now extirpated nature blog resources, particularly the Nature Blog Network and I and the Bird.