The letter-winged kite (Elanus scriptus) is a small, rare bird of prey that is found only in Australia. Measuring around 35 cm (14 in) in length with a wingspan of 84–100 cm (33–39 in), the adult has predominantly pale grey and white plumage and prominent black rings around its red eyes. It gains its name from a distinctive black "M" or "W" shape on the underwing, seen when in flight. This marking distinguishes it from the otherwise similar black-shouldered kite. The species begins breeding rapidly in response to rodent outbreaks, with pairs nesting in loose colonies of up to 50 birds each. Three to four eggs are laid and incubated for around 30 days, though the eggs may be abandoned if the food source disappears. Chicks are fledged within five weeks of hatching. Roosting in well-foliaged trees during the day, the letter-winged kite hunts for rodents mostly at night, hovering in midair above grasslands and fields. (Full article...)