...It is known locally by a great many names, nearlyall of which have reference to the "booming" or "pumping" sound made duringthe mating season... 
Chester A. Reed 「The Bird Book」
...In regard to the mating of the birds, the followingmost interesting customs seemed to be prevalent...
George Murray Levick 「Antarctic Penguins」
...The mating season of course varies, but is mainly in January and February, the period of gestation being nine weeks...
A. R. (Arthur Robert) Harding 「Wolf and Coyote Trapping」
...They are especially attractive to the wolf during the mating season, but are also good at other times, and should be used without bait...
A. R. (Arthur Robert) Harding 「Wolf and Coyote Trapping」
..."The mating time is the best time to use it and the matrix from a female wolf in alcohol is very good to use...
A. R. (Arthur Robert) Harding 「Wolf and Coyote Trapping」
...The mating season commences about the last week in February and ends about the middle of March...
Elmer Harry Kreps 「Science of Trapping」
...The mating season comes mainly in January and February...
Elmer Harry Kreps 「Science of Trapping」
...The mating season is in July and August and the young, usually two, are born in January, February and March...
Elmer Harry Kreps 「Science of Trapping」
...Their mating season is generally about the last of February and the beginning of March, and at this time the males travel considerably, crawling into a hollow tree wherever daylight overtakes them...
Elmer Harry Kreps 「Science of Trapping」
...Since ducks are kept for different purposes therewill of course be certain fundamental differences inthe different classes in the selection of the individualsto make up the mating...
Harry M. Lamon 「Ducks and Geese」
...Some ganders are very troublesome about mating...
Harry M. Lamon 「Ducks and Geese」
...It is, of course, necessary toknow the sex so as to provide the proper number ofganders and so as to know what birds to pen togetherin making a mating...
Harry M. Lamon 「Ducks and Geese」
...The mating season of the red fox comes mainly in February and thebeginning of March and the young, from five to eight or nine, are bornin April or early in May...
A. R. Harding 「Fur Farming」
...—As before stated the mating season comes late in February andin March and the young animals make their appearance in May...
A. R. Harding 「Fur Farming」
...During the mating season they also wander away from thestreams more than at other times...
A. R. Harding 「Fur Farming」
...The mating behavior of this species has not been described inthe literature, and the following observations, made by Raun atCamp 2 on July 8, may be of interest...
Robert K Selander 「Vertebrates from the Barrier Island of Tamaulipas, México」
...As regards colour, it is a triumph of art overnature, by the means of skilful, careful mating, continued withunwearying patience...
Harrison Weir 「Our Cats and All About Them」
...For spotted tabby the best brown are those got by mating a spotted redtabby, the darker the better, and a brown and black spotted female...
Harrison Weir 「Our Cats and All About Them」
...They have taken the chancevariations in form and habit and endeavored to extend these sports ofnature by a careful system of mating those in which the singularfeatures were most evident...
Nathaniel Southgate Shaler 「Domesticated Animals」
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