Blue-Footed Booby
Proposes marriage by high-stepping around in circles to show off its feet
No photo available for Blue-Footed Booby
The wacky thing
Male blue-footed boobies court females with an exaggerated, deliberate marching dance — lifting each bright blue foot high and holding it up for a beat before setting it down, over and over, sometimes while whistling and presenting sticks. The bluer and brighter the feet, the more attractive the male — foot color comes directly from carotenoid pigments in the fish they eat, so it's an honest, real-time signal of how well-fed and healthy he currently is.
Overview
Blue-footed boobies are seabirds found along the Pacific coast from the Gulf of California down to Peru, most famously on the Galápagos Islands. They're excellent plunge-divers, folding their wings and dropping from height straight into the ocean to catch fish, sometimes diving in synchronized groups. Their name comes from the Spanish 'bobo' ('clown' or 'fool'), reportedly because their clumsy waddling on land and lack of fear of humans made early sailors think they looked silly.
Found in
Coastal and offshore islands of the eastern Pacific, from the Gulf of California to Peru, including the Galápagos Islands.
Things worth knowing
- 1
Foot color fades within days if a booby stops eating well, making it a live, honest fitness indicator — females can effectively assess a male's current hunting success just by looking at his feet.
- 2
The mating dance also includes 'sky-pointing,' where the booby raises its bill, wings, and tail all skyward simultaneously while whistling or honking.
- 3
Blue-footed boobies dive from up to 24 meters in the air, hitting the water at speeds that would seriously injure most other birds — they have internal air sacs in their skull that cushion the impact.
- 4
Their clumsy waddle on land is a direct tradeoff for their diving ability — their feet and short legs are positioned for swimming and diving efficiency, not graceful walking.
- 5
Chicks in the same nest can hatch days apart, and in food-scarce years the older, larger chick will kill its younger sibling — a strategy that ensures at least one chick survives.