THE SEASON OF BIRTHS FOR NORTHERN-HEMISPHERE UNGULATES IN NEW ZEALAND

THE SEASON OF BIRTHS FOR NORTHERN-HEMISPHERE UNGULATES IN NEW ZEALAND INTRODUCTION Zuckerman (1953) presented detailed information on the season of births of mammals in captivity and attempted to compare these patterns with those of wild mammals. He concluded (p. 933) that « unfortunately there is little reliable information in scientific journals about the breeding habits of wild mammals, and it is usually difficult to evaluate the observations on this subject that appear in the naturalistic literature ». The reason for this is obvious : while the relative frequency of births by season can readily be observed for animals in captivity, direct observations of this kind are almost impossible to make on wild populations. Seasons of birth for wild mammals are usually expressed in hazy terms giving the months over which births or pregnancies have been known to occur and a guess at the « peak period » or « average date ». (*) Forest Research Institute, Rotorua, New Zealand« Present address : School of Biological .Sciences, Zoology Building, University of Sydney, Australia. · ' - . M ; : . . ; . ' · , .:. . . ,·.· . UNGULATES IN NEW ZEALAND This kind of information is not precise enough to indicate detailed differences in http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Mammalia - International Journal of the Systematics, Biology and Ecology of Mammals de Gruyter

THE SEASON OF BIRTHS FOR NORTHERN-HEMISPHERE UNGULATES IN NEW ZEALAND

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Publisher
de Gruyter
Copyright
Copyright © 2009 Walter de Gruyter
ISSN
0025-1461
eISSN
1864-1547
DOI
10.1515/mamm.1971.35.2.204
Publisher site
See Article on Publisher Site

Abstract

INTRODUCTION Zuckerman (1953) presented detailed information on the season of births of mammals in captivity and attempted to compare these patterns with those of wild mammals. He concluded (p. 933) that « unfortunately there is little reliable information in scientific journals about the breeding habits of wild mammals, and it is usually difficult to evaluate the observations on this subject that appear in the naturalistic literature ». The reason for this is obvious : while the relative frequency of births by season can readily be observed for animals in captivity, direct observations of this kind are almost impossible to make on wild populations. Seasons of birth for wild mammals are usually expressed in hazy terms giving the months over which births or pregnancies have been known to occur and a guess at the « peak period » or « average date ». (*) Forest Research Institute, Rotorua, New Zealand« Present address : School of Biological .Sciences, Zoology Building, University of Sydney, Australia. · ' - . M ; : . . ; . ' · , .:. . . ,·.· . UNGULATES IN NEW ZEALAND This kind of information is not precise enough to indicate detailed differences in

Journal

Mammalia - International Journal of the Systematics, Biology and Ecology of Mammalsde Gruyter

Published: Jan 1, 1971

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