North Seymour Island is a small island near to Baltra Island. North Seymour is an extraordinary place for breeding birds and is home to one of the largest populations of nesting blue-footed booby birds and magnificent frigate birds. Pairs of blue-footed boobies can be seen conducting their mating ritual as they offer each other gifts, whistle and honk, stretch their necks towards the sky, spread their wings and dance, showing off their bright blue feet. Magnificent frigate birds perch in low bushes, near the boobies, while watching over their large chicks. The frigates are huge, dark acrobats with a 90-inch wingspan. Male frigates can puff up their scarlet throat sacks to resemble a giant red balloon.
Boobies and frigates have an interesting relationship – Booby birds are excellent hunters and fish in flocks. The frigates by comparison are pirates, they dive bomb the boobies to force them to drop their prey. Then the acrobatic frigate bird swoops down and picks up the food before it hits the water.