Parrots in captivity, with notes by the hon. F.G. Dutton, Объемы 1-2

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Frederick George Dutton (hon)
1884
 

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Стр. 12 - ... of the year when food was scarcest; they would also rear more young, which would tend to inherit these slight peculiarities. The less fleet ones would be rigidly destroyed. I can see no more reason to doubt that these causes in a thousand generations would produce a marked effect, and adapt the form of the fox or dog to the catching of hares instead of rabbits, than that greyhounds can be improved by selection and careful breeding.
Стр. 12 - But analogy may be a deceitful guide. Nevertheless all living things have much in common, . . . Therefore I should infer from analogy that probably all the organic beings which have ever lived on this earth have descended from some one primordial form into which life was first breathed."1...
Стр. 12 - To give an imaginary example from changes in progress on an island: — let the organization of a canine animal which preyed chiefly on rabbits, but sometimes on hares, become slightly plastic; let these same changes cause the number of rabbits very slowly to decrease, and the number of hares to increase; the effect of this would be that the fox or dog would be driven to try...
Стр. 88 - I could not but take notice of the remarkable contrast between their elegant manner of flight, and their lame crawling gait among the branches. They fly very much like the wild pigeon, in close compact bodies, and with great rapidity, making a loud and outrageous screaming, not unlike that of the red-headed woodpecker. Their flight is sometimes in a direct line; but most usually circuitous, making a great variety of elegant and easy serpentine meanders, as if for pleasure.
Стр. 88 - ... they generally roost, thirty or forty, and sometimes more, entering at the same hole. Here they cling close to the sides of the tree, holding fast by the claws and also by the bills. They appear to be fond of sleep, and often retire to their holes during the day, probably to take their regular siesta. They are extremely sociable with, and fond of each other, often scratching each other's heads and necks, and always, at night, nestling as close as possible to each other, preferring, at that time,...
Стр. 152 - LOWE'S BEAUTIFUL-LEAVED PLANTS : being a description of the most beautiful-leaved Plants in cultivation in this country. With 60 coloured Illustrations.
Стр. 87 - Kenhawa, the Scioto, the heads of the Miami, the mouth of the Manimee at its junction with Lake Erie, on the Illinois river, and sometimes as far north-east as Lake Ontario, and along the eastern districts as far as the boundary line between Virginia and Maryland. At the present day...
Стр. 15 - ... nests are by the bird making Co'tora in an adjoining tree, which lies in conspicuous heaps on the ground. — Co'tora is the bark stripped off the smaller branches, and cut into small pieces. — When the young ones are nearly fledged the old birds cut a quantity of small branches from the adjoining trees, but never from that in which the nest is situated.
Стр. 74 - ... which hovering over this spot, and often wheeling and playing on the wing about it, afforded a most brilliant appearance, by the glittering of the sun on their variegated plumage ; so that some of the spectators cannot refrain from a kind of transport, when they recount the complicated beauties which occurred in this extraordinary waterfall.

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