There are many insectivorous birds; among the song birds are the hermit thrush, the wood thrush, the Wilson's thrush, the brown thrasher, the bobolink, the catbird, the oven bird, the house wren, the song sparrow, the fox sparrow, the vesper sparrow, the white-throated sparrow (Peabody bird), the goldfinch and the robin.
The hermit thrush, veery, song sparrow, red-eyed vireo, bunting, warbler and wren are among the song birds of the forests.
It has few distinctive species, but within its borders the southern mole and cotton-tail rabbit of the South meet the northern star-nosed and Brewers moles and the varying hare of the North, and the southern bobwhite, Baltimore oriole, bluebird, catbird, chewink, thrasher and wood thrush are neighbors of the bobolink, solitary vireo and the hermit and Wilson s thrushes.
Among land birds may be enumerated several varieties of eagle, vulture, falcon, owl, crow, jay, magpie, stork, quail, thrush, dove, &c. Pheasants are easily acclimatized; grouse and woodcock are indigenous on the uplands of the north; partridges, in all districts.
A finch (Nesospiza acunhae), a thrush (Nesocichla eremita), and a water-hen (Gallinula nesiotis) are the only land birds - the first two being peculiar to the islands.
Of the various other genera allied to Mimus, the best known are the thrashers (genus Harporhynchus) of which six or eight species are found in North America, which are thrush-like and shy in their habits and do not mimic; and the cat-bird (Galeoscoptes carolinensis), which in addition to having an attractive song, utters clucks, whistles and mewing sounds.
Birds of passage include the buzzard, kite, quail, wild fowl of various kinds, golden thrush, wagtail, linnet, finch and nightingale.
Thrushes have not been widely introduced, but the song-thrush and blackbird (Turdus musicus and Merula merula) are common in New Zealand; attempts were made, but unsuccessfully, to establish the latter in the United States.
The thrush is represented by a number of species, one of which, the sabia (Mimus), has become the popular song-bird of Brazil through a poem written by Gonsalves Dias.
Warbler, olive-backed thrush, three-toed woodpecker, spruce grouse, and Canada jay; within this zone in the North-eastern states are a few moose and caribou, but farther north these animals are more characteristic of the Hudsonian zone.
The fauna includes buffaloes, a marsupial cuscus, some bats, the beautiful scarlet lory, rare varieties of the ground-thrush, honey-eater and oriole.
One of the most perfect cases of mimicry in birds is presented by a Madagascar thrush or babbler (Tylas eduardi), which resembles feather for feather a shrike (Xenopirostris polleni), from the same island.
Characteristic forms of the Upper Sonoran zone are the burrowing owl, Nevada sage-thrush, sagethrasher and special species of orioles, kangaroo rats, mice, rabbits and squirrels.
Of birds very few are indigenous; the jackdaw, blue solitary thrush, spectacled warbler, the robin, kestrel and the herring-gull.