Heermann's Gull
The Heermann's Gull is the only North American gull that breeds south of the United States and comes north to spend the nonbreeding season. After breeding is over in July, the gull quickly comes north all the way to southern Canada. It heads back southward by December, and most breeders are at the breeding islands by March.
The total world population breeds on one island, Isla Raza in Mexico.
Heermann's Gull
The Heermann's Gull is the only North American gull that breeds south of the United States and comes north to spend the nonbreeding season. After breeding is over in July, the gull quickly comes north all the way to southern Canada. It heads back southward by December, and most breeders are at the breeding islands by March.
The total world population breeds on one island, Isla Raza in Mexico.