Christmas Island Frigatebird

Fregata andrewsi

Christmas Island IMG_3358 20190220 - male with white axiliary spot.

Notes: Largest. Very long bill, broad base to wing. Male: black above, black hood; grey bill;
ovoid shape white underbody; red gular sac when breeding, can be inflated. Some have an
axiliary spot. Female: bill pink; pink eye-ring; partial collar, white armpits behind black tabs,
underbody white extends to legs. Juvenile: buff hood, hexagonal white belly patch.

Range from Pizzey & Knight©