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Updated: July 12, 2025
In the gloom of the forest the bird was hard to see, but the flashing of this patch of white feathers revealed it at once, attracting immediate attention. It was an excellent example of a coloration mark which served a purely advertising purpose; apparently it was part of a courtship display. The bird was about thirty feet up in the branches.
One of them was the sheep which had walked so close to us; there was no doubt of that, for I had been able to see the details of his "face and figure." Every argali has its own special characters which are unmistakable. In the carriage of his head, the curve of his horns, and in coloration, he is as individual as a human being.
The convolvulus and some other plants closed their leaves, but those of the mimosa remained open. The little light that remained was of a livid hue. One observer described the general coloration as resembling the lees of wine, but human faces showed pale olive or greenish.
Boil until the deep blue is displaced by a light bluish green coloration, or until brown stains form on the sides of the flask. Add a solution containing about 3 grams of potassium iodide, as in the standardization, and titrate with thiosulphate solution until the yellow of the liberated iodine is nearly discharged.
Michael, a picture which evoked much interest at Rome, and whose coloration was adversely criticised by Sebastiano del Piombo; here also the hand of Giulio is all too apparent, and the picture, moreover, has suffered much in its transference from wood to canvas. 1505, N. wall, the masterly and authentic portrait of Baltazar Castiglione, was executed in 1506.
On July 11, when normally it would have been in eclipse, the nuptial plumage was unmodified except for a diffuse light-brown coloration on the abdomen, which is stated to be due not to any growth of new feathers but to pigmentary modification in the old.
From the many cases of gradation in the amount of difference between the sexes, and from the prevalence of the same general type of coloration throughout the whole of the same group, we may conclude that the causes have generally been the same which have determined the brilliant colouring of the males alone of some species, and of both sexes of other species.
After we had killed the first wapiti we did not fire a shot for two days, even though roebuck were all about us and we wanted a series for the Museum. This species, Capreolus bedfordi, is smaller both in body and in antlers than the one we obtained in Mongolia and differs decidedly in coloration.
Sparrow, pugnacity of the male; acquisition of the Linnet's song by a; coloration of the; immature plumage of the. Sparrow, white-crowned, young of the. Sparrows, house- and tree-. Sparrows, new mates found by. Sparrows, sexes and young of; learning to sing. Spathura Underwoodi. Spawning of fishes. Spear, used before dispersion of man.
A glance at the skins and a moment's serious thought would have been enough to show any sincere thinker that in these cats the coloration pattern, whether concealing or revealing, is of no consequence one way or the other as a survival factor. The spotted patterns conferred no benefit as compared with the nearly or quite monochrome blacks, reds, and dark grays.
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