Doug Perrine / Magnificent frigatebirds (Fregata magnificens) fighting over a Spanish sardine (Sardinella aurita) off Yucatan Peninsula, Mexico, Caribbean Sea.

Doug Perrine / Magnificent frigatebird (Fregata magnificens) juvenile catching a Spanish sardine (Sardinella aurita) from bait ball, off Yucatan Peninsula, Mexico, Caribbean Sea.

Doug Perrine / Magnificent frigatebird (Fregata magnificens) juvenile snatching a Spanish sardine (Sardinella aurita) from bait ball whilst dropping a second fish, off Yucatan Peninsula, Mexico, Caribbean Sea.

Doug Perrine / Magnificent frigatebird (Fregata magnificens) catching Sardine (Sardinella aurita) out of a bait ball, with juveniles (with white heads in flight nearby) and approaching Atlantic sailfish (Istiophorus...

Tui De Roy / Blue-footed Booby (Sula nebouxii) overlooking volcanic coast. Punta Vicente Roca, Isabela Island, Galapagos, Ecuador.

Juan Carlos Munoz / Magnificent frigate bird (Fregata magnificens) in flight, Isla Holbox, Yucatan Peninsula, Mexico.