White-naped Swift
Streptoprocne semicollaris
Very large, spectacular swift of highlands in west Mexico, also descending locally to foothills and lowlands. Often in flocks, at times of hundreds, especially around waterfalls and other roosting sites. Flight fast and strong, often soaring in kettles with wings spread in paddlelike bulges. Note the very large size, thick white nape band (often visible in a side view), and slightly notched tail (tip squared when tail is spread). Varied screaming and chattering calls can suggest parakeets.
Taxonomy
- Scientific name
- Streptoprocne semicollaris
- Authority
- (de Saussure, HLF, 1859)
- Order
- Apodiformes
- Family
- Apodidae
- Genus
- Streptoprocne
Range and habitat
- Migration
- Vertical migration
Conservation
- Population trend
- declining
Photos
Distribution
Bird Calls
Other Birds

Black-banded Woodcreeper
Dendrocolaptes picumnus
This is a large woodcreeper with a hefty straight bill. Look for the combination of pale streaks on the head and breast and dark barring on the belly. Large range from Central America to northern Argentina, but usually uncommon. Occurs from lowlands up to around 2,000 m. Typically found in mature forest, singly or in pairs, sometimes following a mixed-species flock or ant swarm. Listen for a loud ringing trill that usually falls slightly in pitch, where each note sounds clipped.

Mountain Scops-Owl
Otus spilocephalus
Small brown owl of hilly and montane broadleaf forests, rarely in parks and gardens. Dark brown above, paler on the underparts and face, with bright yellow eyes. Prominent bright white stripe between back and wings is more contrasting than in other owls in its range. Brows are frosty white, as in larger Collared Scops-Owl, but ear tufts much shorter in Mountain. Song is a long series of soft double hoots, with 5-10 second pauses between each pair of notes.

Gray-backed Sparrow-Lark
Eremopterix verticalis
A small, compact finch-like sociable lark that is both resident and nomadic, although movements are poorly understood. The sexes differ in plumage: the male has a gray-brown back and wings with a scalloped pattern, and a black head with bold white ear patches that reach the back of the neck; the streaky female is variable depending on geographic range, but always has a dark belly patch and tends to be paler than other female sparrow-larks. Flocks of 20 to 100 birds (often mixed with other sparrow-larks or with Stark’s Lark) can appear in grassy patches in semi-arid shrublands and fallow fields. They shuffle along in bare patches foraging for seeds and insects.
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