Gray-crowned Munia

Bright yellow finch with a thick, powerful bill. Male is daffodil-yellow with a black mask, dark bill, and scaly speckling on the back. Female is duller yellow with light pink in the bill, weaker back patterning, and a much fainter head pattern. Baya Weaver is less extensively yellow, with the female having darker patterning on the back and wings than Asian Golden Weaver. Inhabits lowland wet farmland and natural wetlands where the male builds round grass nests in small colonies. Native to mainland Southeast Asia and Sumatra; introduced to Singapore.

A chunky slate-gray and white bird with a heavy, pale blue bill. A gregarious bird of forest and forest edge in the lowlands and mountains. Usually encountered in small groups, either gliding above the canopy or perched high up on dead snags, from which it regularly sallies. Note the white back, which separates this species from White-breasted Woodswallow. Ivory-backed also prefers forested areas, avoiding extensive open country. Calls include a series of metallic chirps.

Large, dark brown skua with a very robust beak. Several subspecies vary in plumage from largely dark to mottled pale brown. In flight, exhibits a broad white patch on both upperwings and underwings. Usually seen well offshore, less often towards the coast; often follows boats. Lacks the capped appearance of Great and Chilean Skuas, and has darker underwing coverts than those species. The dark morph of South Polar Skua has colder tones and a smaller bill, but field separation is difficult.