Mossy-nest Swiftlet

A small greenish bird with a barred chest and tail, and a dark stripe through the eye that droops down across the cheek. Young birds can be almost unbarred and may appear similar to the grayer Black-eared Cuckoo. Often perches prominently on top of a shrub or tree, and calls repeatedly with a loud piercing descending whistle. Occurs in Indonesia and across much of Australia (including arid inland areas).

A short-tailed understory robin with a bright yellow-orange throat. Also shows a dark-green back, buff belly, and a white spot in front of the eye. Most often encountered by its song: a duet, in which the male gives high-pitched whistles and the female makes an accompanying chatter. Similar to Orange-breasted Forest Robin (potentially very limited overlap in range), but underparts more extensively yellowish-orange. Otherwise most likely to be confused with Lowland Akalat, but can always be distinguished by the white spot in front of the eye, as well as the dark-green rather than rufous-brown back, and the buff rather than white belly.

A graceful aerial feeder found over a wide variety of open habitats, especially near water, including marshes and towns. Often seen on exposed perches including power and telephone lines in villages. Commonly found in flocks of up to twenty birds, sometimes mixing with other swallows and martins. Note the male’s diagnostic glossy purple-blue plumage and snow-white belly. Females and immatures are similarly patterned, but have brown mixed with the blue and are probably not safely separable from Cuban Martin. Female and immature Purple Martins are very similar, but they often have a scaly breast and finely streaked belly, with less contrast between belly and chest. Notably, Cuban and Purple Martins are not present in this species’ range from March to September. Calls include a harsh “churr,” a buzzy “zwick-zwick,” and a musical buzzy burbling.