The American robin is the state bird of Connecticut, Michigan and Wisconsin, with the male and female looking strikingly similar, only differentiated by the female's duller orange hue. Robins are also known for their run-and-stop movements on land. The male American robin sings a more intricate song, and is often the last bird that is heard before sunset. Robins respond to artificial light during night hours, leading them to often be mistaken for nightingales.
Robins are omnivores and eat everything from vegetation to insects and earthworms. Some favorite foods of robins include berries, sweet cakes, meal worms and pastry dough. Robins also eat fermented berries, which cause them to exhibit intoxicated behavior, including falling over and crooked walking. Robins were hunted for their meat in the past, but are now protected due to the Migratory Bird Act. Robins are also known carriers of the West Nile virus because they hold the disease longer than any other species, allowing the virus to be spread to more mosquitoes.
Female robins construct the nests for their broods. Nests are built from the inside out, and are constructed of twigs, paper, moss, grass and mud. Robin nests are typically 6 to 8 inches wide, and approximately 3 to 6 inches high. Juvenile robins have a brown breast and acquire their red-orange breast after moulting. Most adult robins do not enter birdhouses or feeders with round entrance holes, but rather prefer open-front or dish-mounted houses and feeders.