Question 1
This starling-sized black-and-white bird has a bright red patch under the tail, and the male also has red on the back of the head. It climbs tree trunks propped on stiff tail feathers, hammers its beak into bark for grubs, and in spring 'drums' very fast on a dead branch instead of singing. 
Question 2
This pigeon-sized bird of the cloud forests of Central America shines metallic green and gold above and deep crimson below, with a rounded bristly crest. In the breeding season the male grows streaming upper tail feathers up to a metre long that ripple behind him in flight. It eats mainly wild avocados. 
Question 3
This slender, streaky brown ground bird of the deserts of the south-western United States and Mexico has a long tail, a shaggy crest, and strong legs. It hardly ever flies, preferring to sprint after lizards, snakes and insects at over 30 km/h. It is a member of the cuckoo family. 
Question 4
This is one of the largest flying birds in the world, with a wingspan of about 3 metres. It is a black vulture with a ruff of white neck feathers and white wing patches, and a bare head, dull red in the male, who also has a fleshy comb. It soars for hours over the mountains of South America without a single wingbeat. 
Question 5
This slim, long-tailed grey bird of Europe and Asia looks a little like a small hawk in flight. The male's simple two-note call, heard in spring, gave its name to a type of clock. The female lays her eggs one at a time in the nests of much smaller songbirds and never raises her own chicks. 
Question 6
This stocky, large-headed Australian bird belongs to the kingfisher family but rarely goes near water. It has a brown back, a cream head and underparts, and a heavy beak, and it drops from a perch onto snakes, lizards and large insects. Its call is a loud, rising, cackling chorus like wild human laughter. 
Question 7
This is the tallest and heaviest of the flightless, black-and-white, upright seabirds. It breeds in the depth of winter on the open sea ice around Antarctica, in temperatures below minus 40 C, huddling in tight groups for warmth. The male keeps the single egg on his feet for about two months, eating nothing. 
Question 8
This crested songbird of eastern North America comes in a brilliant all-over red male, with a black mask around a stout orange-pink seed-cracking beak, and a warm buff-brown female with red touches. It does not migrate, and both sexes sing loudly, often a clear 'cheer-cheer-cheer' or 'birdy-birdy'. 
Question 9
This pale, night-hunting bird has a smooth, heart-shaped white face like a mask, golden-buff upperparts, and white underparts. It flies almost silently on soft-edged wings and finds mice and voles by sound alone. It often roosts in old buildings and church towers, and makes an eerie screech rather than a hoot. 
Question 10
This small, fast-flying bird has long pointed wings, a deeply forked tail with thin trailing streamers, glossy blue-black upperparts, a rusty-red forehead and throat, and pale underparts. It catches insects on the wing, skimming low over fields and water, and builds a mud cup on a beam inside a farm shed. 
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