Blue-footed Booby vs Nazca 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

Nazca Booby

Sula granti

Huge1.7 kgMarine

The species has a yellow iris, orange and pinkish beak, black facial skin in the form of a mask, and grey feet. Adults present white plumage with black tips of the wings and tail. The female is bigger and heavier than the male, has a slightly differently colored beak, and squawks while the male whistles. Chicks are snow white and fluffy, plumage changing to grey along with beak and feet upon fledging.

ID text from Wikipedia, CC BY-SA 4.0

Photo: Original uploader was Soler97 at en.wikipedia · Public domain

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