Swallow-tailed Gull Chick Young Swallow-tailed Gull chicks have a harsh call that starts with a scream that displays their red mouth and tongue. Then they make an odd rattle and end with a clicking noise. The click might be used for echo-location during night feeding. This species has a black and white camouflage pattern that resembles guano on lava rock! Genovesa Island.
76 of 297 Index - or click on photo to advance