Red-billed Tropicbird (Phaethon aethereus) Science Article 1
abstract
Two of the world’s three tropicbird species (Fig. 1) are regular breeders in the Hawaiian Islands. The Red-tailed Tropicbird Phaethon rubricauda is more common in the NorthwesternHawaiian Islands; the White-tailed Tropicbird P. lepturus is more common in the main Hawaiian Islands
ERIC A. VANDERWERF and LINDSAY C. YOUNG, Marine Ornithology 35: 81-84 (2007)