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The red-billed tropicbird can be differentiated from the other tropicbirds by its red bill in combination with its white tail streamers. The slightly smaller red-tailed tropicbird has red rather than white tail streamers, and the white-tailed tropicbird can be differentiated by its smaller size, black stripe along its upper wing coverts, and ...
The red-billed tropicbird is basal within the genus. The split between the red-billed tropicbird and the other two tropicbirds is hypothesized to have taken place about six million years ago, with the split between the red-tailed and white-tailed tropicbird taking place about four million years ago. [9]
White-tailed tropicbird, Phaethon lepturus; Red-billed tropicbird, Phaeton aethereus (A) ... In size they range from 8 cm (3.1 in) to 1 m (3.3 ft) in length. Most of ...
Size of this preview: 800 × 533 pixels. ... English: Red-billed tropicbird (Phaethon aethereus mesonauta) nesting, Little Tobago. Date: 13 December 2014, 12:06:43:
Red-billed tropicbird, Phaethon aethereus; Red-tailed tropicbird, Phaethon rubricauda; ... In size they range from 8 cm (3.1 in) to 1 m (3.3 ft) in length. Old World ...
Red-billed tropicbird, Phaethon aethereus; Southern storm-petrels. Order: ... In size they range from 8 cm (3.1 in) to 1 m (3.3 ft) in length. Old World parrots are ...
Groove-billed ani. Order: Cuculiformes Family: Cuculidae. The family Cuculidae includes cuckoos, roadrunners, and anis. These birds are of variable size with slender bodies, long tails, and strong legs. The Old World cuckoos are brood parasites. Greater ani, Crotophaga major (A) Smooth-billed ani, Crotophaga ani
Red-billed tropicbird. Order: Phaethontiformes Family: Phaethontidae. Tropicbirds are seabirds once thought to be closely related to pelicans but are now known to belong to a clade known as Metaves. Red-billed tropicbird, Phaethon aethereus; Red-tailed tropicbird, Phaethon rubricauda (A)