Red-footed Booby: where and when to see them

Red-footed boobies are slender tropical seabirds whose vivid feet contrast with blue-toned bills and variable plumage. Adults may be mostly white, mostly brown or intermediate, so colour alone can mislead observers. Unlike many related boobies, they usually build nests in trees or shrubs. Their breeding colonies are scattered across tropical oceans, often on remote islands, while feeding trips carry them far beyond land into waters rarely visible from ordinary shore viewpoints.

Size

Length 64–76 cm

Weight

0.85–1.1 kg

Lifespan

Not reliably established

Status

Least Concern

Pairs occupy small nesting spaces in crowded trees and shrubs, using twigs to construct platforms above the ground. Both parents incubate the single egg with their feet and later feed the chick. Birds commute between colonies and offshore feeding areas, often travelling considerable distances. They capture prey with aerial plunges and sometimes take flying fish above the surface. Colony approaches can reveal agile landings on branches despite their fully webbed feet. Courtship displays involve the male presenting nesting material to the female and both birds engaging in bill-clapping. Juveniles often have a dusky brown plumage, gradually acquiring adult coloration over several months.

• It is the smallest living booby species.
• Brown and white adults can occur in the same colony.
• Parents warm their egg using vascularized foot webs.
• Its webbed feet can grip branches well enough for tree nesting.

There is no single breeding season across this widespread species. Some colonies have prolonged or overlapping nesting cycles, while others show stronger local peaks. Select travel dates using destination weather and current colony information, keeping those practical windows separate from claims about nesting. Breeding success can be highly variable year to year, influenced by oceanographic conditions like El Niño events affecting food availability. Visitors might observe breeding activities year-round in some equatorial destinations, but peak activity can vary regionally.

Breeding islands typically provide coastal woodland, shrubs or mangroves, although occasional nests occur on lower vegetation or other supports. The surrounding feeding habitat is warm tropical ocean. Suitable colonies may be isolated, protected or inaccessible even where the species occurs within a destination. They are often found on remote oceanic islands and cays, avoiding islands with terrestrial predators. Colonies are typically found on the leeward side of islands, providing shelter from strong winds.

Flying fish, other small fishes and squid dominate the diet. Prey is taken near the sea surface, often where larger marine predators drive schooling animals upward. The species' relatively light build and long wings support extensive searches across nutrient-poor tropical waters. Prey is typically consumed on the wing, with fish often swallowed headfirst. They sometimes forage in association with tuna or dolphins, which herd schools of fish closer to the surface.

Common name

Red-footed Booby

Scientific name

Sula sula

Animal group

Birds

Size

Length 64–76 cm

Weight

0.85–1.1 kg

Lifespan

Not reliably established

Status

Least Concern

Identification

Adults combine red feet, a pale bluish bill and a slim body, unlike the heavier masked booby or the blue-footed booby with blue feet. The most common morph in the Pacific is white-bodied, but a dark-brown morph is frequent in some regions, particularly the Caribbean. The distinct red feet are present in all morphs, making it a reliable field mark.