Rusty-fronted Barwing

Elegant medium-sized tern with a slender yellow-orange bill and black crown. Can be confused with Great Crested Tern; note proportionally longer, more orangey bill on Lesser Crested. Also note gray upperwing, which separates it from Sandwich Tern. Gray rump and tail are diagnostic if seen well. On juveniles, note dull legs, secondaries with dark centers, and a weakly patterned upperwing. Strictly coastal, usually found on beaches and estuaries. Call a noisy “kerrrick.”

A gray-and-white flycatcher-like songbird confined to the eastern Lesser Sundas. Head slate-gray with well-defined black mask and throat. Underparts bright white and upperparts slate-gray, with dark tail displaying obvious white outer feathers. Juveniles are grayish-brown above and cinnamon below, with white on face, throat, and neck. Singles and pairs frequent mixed-species flocks within understory of forest, forest edge, and mangroves. Lacks orange on breast, unlike Spectacled Monarch. Song is a high-pitched, descending whistled “seeeer.” Also gives a scratchy “k’schrrrr,” “schrrrr,” and rasping “weeee.”

Small, compact duck with a long, fan-shaped tail, often held sticking up out of water. Breeding males have a chestnut body, black cap, white cheek, and baby-blue bill. Winter males have a brown body, black cap and white cheek. Females and immature males are brown overall with a dark cap and dark line through the cheek. Often in tight groups bobbing like corks on ponds and bays. Dives to forage on aquatic invertebrates. Not often seen flying.