Birds

Magnificent frigatebird

Fregata magnificens

A magnificent frigatebird in flight, black with long angular wings and a deeply forked tail, against a blue sky

Photo: Andrew Turner from Washington, DC, United States · CC BY 2.0 · via Wikimedia Commons

Where
Beaches, Offshore
When
Daytime, all year, most over the bay in the afternoon
Size
Wingspan around 2.2 to 2.4 metres
Should I worry
Enjoy it
Harmless. It is only interested in other birds' fish.

Look up over the bay on any afternoon and there they are, a dozen black crosses drifting on the thermals without a single wingbeat. From the beach they look like kites someone let go of.

Where you’ll see it

Over the water and the beach, all along the coast, and in numbers over the fishing boats in Coco bay when the catch is being cleaned. They roost on islands and headlands and spend the day aloft.

What to know

It is a seabird that cannot swim, which sounds like a design error until you watch it work. Frigatebirds pluck fish and squid from the surface on the wing, and they chase boobies and pelicans until the victim drops or regurgitates its meal, then catch it before it hits the water. The scientific name of the family means pirate, and it is earned. Males inflate a red throat pouch like a balloon in the breeding season.

Questions people ask about this one

What are the big black birds circling over Playas del Coco?

Frigatebirds. They ride the thermals over the bay for hours, and they gather over the boats when the fishermen are cleaning their catch. The red throat pouch you sometimes see is a male in breeding condition.

Why do frigatebirds never land on the water?

Their feathers are not waterproof, so a frigatebird that sits on the sea can get waterlogged and struggle to take off. They snatch food from the surface in flight and, famously, harass other seabirds until they give up their catch.

Wondering what else is out there?

Ask me on the call. I'll tell you what actually shows up in a Coco garden, what to do about it, and the one guy everyone rings when there's a boa in the roof.

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