. The Wilson bulletin . be-gins to incubate as soon as an egg is laid, and does not al-ways lay on consecutive days.^ In the case of the Olive-backed Thrush, the fact that theyoung came from the egg at such long intervals, seemed tobe a wise provision of nature. The mother bird brooded theyoung, except during the rest period, for the greater part ofthe time during the first three or four days. She moved backon the nest, stood astride the young, and cared for one fragilechick at a time; she pecked him and touched him with herbeak until he gave the food reaction readily, fed him by re-ijuly 11,
. The Wilson bulletin . be-gins to incubate as soon as an egg is laid, and does not al-ways lay on consecutive days.^ In the case of the Olive-backed Thrush, the fact that theyoung came from the egg at such long intervals, seemed tobe a wise provision of nature. The mother bird brooded theyoung, except during the rest period, for the greater part ofthe time during the first three or four days. She moved backon the nest, stood astride the young, and cared for one fragilechick at a time; she pecked him and touched him with herbeak until he gave the food reaction readily, fed him by re-ijuly 11, 1908, I found the nest of a Blaek-billed Cuckoo con-taining two eggs. The bird was brooding. Two days later there-was a third egg. As nearly as I could determine, the three eggswere hatched on two consecutive days. The two older birds leftthe nest at the beginning of the climbing period, and the parents,,it would seem, devoted themselves to the mature nestlings. the youngest dead in the nest after a rain Olive-backed Thrushes foiiiiu<j; with food for her youiiii. (Thoto by Alfred A. Laii^ewald, Jr.) Olive-backed Thrush at Summer Home. 123 gurgitation, ate the excrement, burrowed under the young,ate the parasites in the nest and on the young. Sometimesshe did this as often as once in four minutes. The male, fromthe beginning, called the female from the nest regularly forthe rest period and fed the young both fresh and chrushedand macerated food. In such a well-ordered nest there wasno opportunity for a nestling to starve to death. To distinguish the birds in nest two, I tied a cord to theleg of each nestling, and named them No. 1, No. 2, No. 3 andNo. 4, in order of their coming to the nest.^ No. 1 and No. 2 1 found at the same time. Those I numbered according totheir weight — No. 1 was the heavier. I tied three cords tothe leg of No. 3, but in some way they were all removed onthe following day. The rapidity with which the young mature is most remark-able. Th
Size: 1363px × 1833px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectbirds, bookyear1894
