Sabine's gull steals eggs from nesting colonies of Arctic terns. The Sabine's gull is a small gull, in length and weighing . The wings are long, thin and pointed with a span of between . The bill, which is black with a yellow tip, is around long. This species is easy to identify through its striking wing pattern. The adult has a pale grey back and wing coverts, black primary flight feathers and white secondaries. The white tail is forked. The male's hood darkens during breeding season. Young birds have a similar tricoloured wing pattern, but the grey is replaced by brown,
Fork-tailed drongo shown in any animal other than humans. Two to four eggs are laid in a cup nest in a fork high in a tree. Drongos are brood hosts for African Cuckoos and Jacobin Cuckoos. Its populations are genetically highly structured, and four races are accepted. The races "D. a. modestus" (Príncipe) together with "D. a. coracinus" and "D. a. atactus" (Bioko to west and central mainland Africa, from Guinea east to western Kenya and south to Angola) are usually split as a separate species, the velvet-mantled drongo, "D. modestus" (Hartlaub, 1849). Fork-tailed drongo The fork-tailed drongo, also called the common