SURVIVAL OF MANX SHEARWATERS PUFFINUS PUFFINUS

Ibis - Tập 115 Số 4 - Trang 535-548 - 1973
Christopher M. Perrins1, M. P. Harris2,1, Carmelita Britton1
1(Edward Grey Institute of Field Ornithology, Oxford.)
2*Nature Conservancy, Banchory, Scotland.

Tóm tắt

SummaryThe breeding success of Manx Shearwaters at Skokholm Island, Pembrokeshire, was followed in study burrows, and data on survival of the young were augmented by ringing large numbers as they were about to leave the island and recapturing them in later years.The weight of the young at fledging and the date at which they leave affect their chances of survival; overall, as many as 30% of the young birds may survive to reach breeding age, which is thought to be normally about 5–6 years. Adult mortality varies between wide limits of about 5 and 20%, but juvenile survival appears to be of about the right order to balance adult losses.The significance of the one‐egg clutch is discussed. At the normal time of laying the female may not be able to obtain sufficient food to form a second egg. A two‐egg clutch, laid at a later date, would not produce more surviving young since these would fledge too late in the season to have a good chance of survival.The advantage of leaving the island at a heavy weight is discussed, and it is concluded that the fat stores laid down give heavy young a greater chance than light young of migrating a long distance without food. It is possible that the young may even reach their winter quarters (off Brazil) without having to feed on passage if they depart with enough stored fat.

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Tài liệu tham khảo

10.1111/j.1474-919X.1963.tb06766.x

Ashmole N. P.&Ashmole M. J.1967.Comparative feeding ecology of sea birds of a tropical oceanic island.Peabody Mus. Nat. Hist. Bull.no. 24.

10.1080/00063656309476048

Diamond A. W., 1972, Sexual dimorphism in breeding cycles and unequal sex ratio in Magnificent Frigate‐birds, Bird Study, 114, 395

10.1080/00063656609476107

Harris M. P., 1965, Puffinosis among Manx Shearwaters on Skokholm, Br. Birds, 58, 426

Harris M. P., 1966, Breeding biology of the Manx Shearwater Puffinus puffinus, Br. Birds, 108, 17

10.1080/00063656609476109

Harris M. P., 1969, Food as a factor controlling the breeding of Puffinus lherminieri, Bird Study, 111, 139

Harris M. P., 1969, The biology of storm petrels in the Galapagos Islands, Proc. Calif. Acad. Sci., 37, 95

10.2307/4083917

10.1080/00063657009476275

10.1080/00063657209476338

Harris M. P., 1973, The biology of the Waved Albatross Diomedea irrorata of Hood Island, Galapagos, Bird Study, 115, 483

Jesperson P., 1930, Ornithological observations in the North Atlantic Ocean. Danish ‘Dana’ Exped. 1920–22, Oceanogr. Rep., 7, 1

Lack D.1954.The natural regulation of animal numbers. Oxford.

Lack D.1966.Population studies of birds. Oxford.

Matthews G. V. T., 1954, Some aspects of incubation in the Manx Shearwater Procellaria puffinus, with particular reference to chilling resistance in the embryo, Oceanogr. Rep., 96, 432

Murphy R. C., 1936, Oceanic birds of South America

Nelson J. B., 1964, Factors influencing clutch‐size and chick growth in the North Atlantic Gannet Sula bassana, Oceanogr. Rep., 106, 63

Norman F. I., 1969, Artificial twinning in the Short‐tailed Shearwater Puffinus tenuirostris, Oceanogr. Rep., 111, 391

Pennycuick C. J., 1969, The mechanics of bird migration, Oceanogr. Rep., 111, 525

Perrins C. M., 1966, Survival of young Manx Shearwaters in relation to their presumed date of hatching, Oceanogr. Rep., 108, 132

Perrins C. M., 1967, The numbers of Manx Shearwaters on Skokholm, Skokholm Bird Observatory Rept., 1967, 23

Perrins C. M., 1970, The timing of birds' breeding seasons, Skokholm Bird Observatory Rept., 112, 242

10.2307/4082639

Serventy D. L., 1967, Aspects of the population ecology of the Short‐tailed Shearwater Puffinus tenuirostris. Proc., int. orn. Congr., 14, 165

Southwood T. R. E.1971.Ecological methods. 3rd ed. London.

Stonehouse B., 1962, The tropic birds (genus Phaethon) of Ascension Island, int. orn. Congr., 103, 124

10.2307/3031

Tucker V. A., 1968, Respiratory exchange and evaporative water loss in the flying Budgerigar, J. exp. Biol., 48, 67, 10.1242/jeb.48.1.67

Wynne‐Edwards V. C.1962.Animal dispersion in relation to social behaviour. Edinburgh and London.

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Ibis

Tập 115 Số 4

535-548

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