Nazca Booby vs Blue-footed Booby

In short

The most reliable way to distinguish a Nazca Booby from a Blue-footed Booby is by the color of their feet: Nazca Boobies have orange or yellowish feet, while Blue-footed Boobies have distinctive bright blue feet. Both species have similar body shapes and are often found in overlapping ranges, but their foot color is a key differentiator.

Identification tips

1. Foot color: Nazca Boobies have orange or yellowish feet, while Blue-footed Boobies have bright blue feet. 2. Facial markings: Look for the more pronounced black mask on the Nazca Booby. 3. Check for overlapping ranges: Both species can be found in similar areas, so focus on the reliable foot color difference.

Plumage

Nazca Boobies have a predominantly white body with black on the wings and tail, similar to the Blue-footed Booby. However, the Nazca Booby has a more pronounced black mask around the eyes, whereas the Blue-footed Booby's mask is less distinct.