...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」
...Diary from October 13 to November 3, describing thearrival of the Adélie penguins at the rookery, andhabits during the periods of mating and building...
George Murray Levick 「Antarctic Penguins」
...After mating, their behaviour as wellas various outward signs serve to distinguish malefrom female...
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」
...This scent is most successful during the mating season and should be used without bait...
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」
...I am told that this marking is done during the mating season...
Elmer Harry Kreps 「Science of Trapping」
... For a more detailed discussion of the principles of breedingas applied to chickens and which is equally applicable to ducks,the reader is referred to "The Mating and Breeding of Poultry"by Harry M...
Harry M. Lamon 「Ducks and Geese」
...In making the mating, size is important andbreeders should be selected which are up to standardweights if possible...
Harry M. Lamon 「Ducks and Geese」
...By means of retaining sperm successive broods possibly are produced after only one mating...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...Living in well defined runways in the dense sacoton grass, these smallrabbits are mainly nocturnal and crepuscular, but sometimes are active by day,especially in cloudy weather in the period of mating...
E. Raymond Hall 「A Synopsis of the North American Lagomorpha」
...As a rule the bird issilent but in the mating season he repeats a 'screeching'note...
Frank M. Chapman 「What Bird is That?」
...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」
...The mating season comes mainly, late in February or early in March, andthe young, from four to six in number, are born in April and thebeginning of May...
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」
...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」
...A forced mating is made by using a mating pen...
Carl Dare 「Profitable Squab Breeding」
ランダム例文：
constellations prick Stuttgart
便利！手書き漢字入力検索