The Children's Book of Birds - novelonlinefull.com
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Usually larger than a robin; bill long and straight; tongue small; head large, crested; wings short; legs small; outer and middle toe united half their length. (Ridgway.)
Food: fishes. s.e.xes slightly unlike. Found by water.
24. Cuculidae: CUCKOOS.
Larger than a robin; bill narrow and high, rather long and curved downward; wings long; tail long, soft, and rounded; toes in pairs.
(Ridgway.)
Insectivorous. s.e.xes alike. Found on trees.
25. Bubonidae: OWLS.
Mostly larger than a robin, a few smaller; bill hooked; eyes directed forward and surrounded by radiating feathers; plumage soft and lax; feathers beside forehead often stand up like ear tufts; legs usually feathered; feet sometimes feathered. (Ridgway.)
s.e.xes alike. Flesh eaters. Usually nocturnal. Most species found in holes in trees or old buildings.
26. Strigidae: BARN OWLS.
Much larger than a robin; bill hooked; eyes very small; triangular-shaped eye disk; tail emarginate; claws sharp and strong; very downy plumage. (Ridgway).
Food: mice and other small mammals. s.e.xes alike. Exclusively nocturnal.
Found in barns and deserted buildings.
27. Falconidae: HAWKS AND EAGLES.
(There are several subfamilies.)
Mostly very large birds; bill strongly hooked; eyes directed sideways; eyelids with lashes; toes never feathered. (Ridgway.)
Carnivorous and insectivorous. s.e.xes usually alike, but female larger.
28. Cathartidae: AMERICAN VULTURES.
Large as a turkey, one species much larger; whole head and sometimes neck bare of feathers; eyes prominent; tail rounded. (Ridgway.)
Food: carrion. Found sailing about in the air.