Bornean Whistler

A large gull that breeds mainly inland, and migrates to the coast for the winter. Adults have a fairly pale gray back, pale eye, and dull yellow legs that can have a hint of pink coloration. Takes four years for immatures to progress from mostly brown to fully white and gray adult plumage; intermediate plumages are often mottled and messy. Variable plumage can make identification tricky. Occurs inland and along the coast, frequenting river mouths, harbors, beaches, lakes, and ponds. Often forms flocks with other gulls. Very similar to Vega Gull, and separation often difficult, but has a smaller head and bill; adults also generally have yellower legs.

Fairly large, rather pale grayish nightjar of scrubby woodlands, thorn forests, edges and adjacent clearings in western Mexico. Hunts mainly from perches at forest edge and from the ground. Cryptic plumage similar to other nightjars; both sexes have buffy collar on the back of the neck. Male has white tail corners. Female has narrow, pale buffy tail corners. Best detected and identified by voice: striking song is a rapid, accelerating series of hollow clucks ending with an emphatic “chee-aa.”

A fairly large gray bird with a heavy bill, a prominent black blotch between bill and eye, and a white underside. Found singly or in pairs in forest edges and open environments with trees, avoiding dense forest. The smaller Manus Cicadabird is the only other cuckooshrike in its limited range on the Admiralty Islands; the cuckooshrike can be distinguished from the cicadabird by its white belly. Gives “kitcheek” or “sh-zick” calls.