Blue-footed Booby vs Masked Booby

Blue-footed Booby

Sula nebouxii

Huge1.5 kgMarine

The blue-footed booby is on average 81 cm (32 in) long and weighs 1.5 kg (3+1⁄4 lb), with the female being slightly larger than the male. Its wings are long, pointed, and brown in color. The neck and head of the blue-footed booby are light brown with white streaks, while the belly and underside exhibit pure white plumage. Its eyes are placed on either side of its bill and oriented towards the front, enabling excellent binocular vision. Its eyes are a distinctive yellow, with the male having more yellow in its irises than the female.

ID text from Wikipedia, CC BY-SA 4.0

Photo: Ndecam from London, UK · CC BY 2.0

Masked Booby

Sula dactylatra

Huge1.7 kgMarine

The largest species of booby, the masked booby ranges from 75 to 85 cm (30 to 33 in) long, with a 160–170 cm (63–67 in) wingspan and 1.2–2.2 kg (2.6–4.9 lb) weight. It has a typical sulid body shape, with a long pointed bill, long neck, aerodynamic body, long slender wings and pointed tail. The adult is bright white with dark wings and a dark tail. The sexes have similar plumage with no seasonal variation, but females are on average slightly heavier and larger than males. The bare skin around the face, throat and lores is described either as black or blue-black.

ID text from Wikipedia, CC BY-SA 4.0

Photo: ImagePerson · CC BY 4.0

Photos and recordings are credited to their authors under the licence shown. Full profiles: Blue-footed Booby and Masked Booby.