Bulletin Volume 121-122

Bulletin Volume 121-122

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1922 edition. Excerpt: ...animals. In some eases it seemed to be merely the regurgitated juices and semi-digested food from the gullet of the parent bird. When the birds are between 15 and 30 days old, more than 90 per cent of the food consisted of squids, the remainder being made up of small minnows and some unidentifiable material. During the latter half of the young bird's life fish constitutes a large part of the food, although many squids, some of considerable size, were present in nearly every specimen examined. The food is transferred from a pouch-like gullet of the adult to that of the young by process of regurgitation. This transfer of food is accompanied by a series of gulps, strains, and wrigglings of the head and neck on the part of both birds. The adult birds remain very closely with the young during the first ten days. The little fellow is usually tucked in under the feathers of the adult and frequently sleeps with its head projecting through the feathers, just as a little chicken does when it is brooded by the old hen. When the little creature became restless the old bird uttered a scries of low guttural sounds, which. I assume, were intended as disapproval. The young birds are unable to fly well when they leave the nest although the wings have been exercised very frequently for some wreeks. Those which I observed leaped into the water from the edge of the nest and then made their way out to sea by paddling. The young birds flopped their wings vigorously, as if attempting to fly, but were never able to rise from the water during the time I observed them. Such an event created considerable excitement among the adult tropic-birds, which assembled to witness the affair. The young bird while thus floating on the water may be fed by the adults, but more...show more

Product details

  • Paperback | 196 pages
  • 189 x 246 x 11mm | 358g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236935152
  • 9781236935151