...The proper number of duckswhich should be mated to a drake varies with thedifferent breeds... 
Harry M. Lamon 「Ducks and Geese」
...Geese when matedusually stay mated permanently...
Harry M. Lamon 「Ducks and Geese」
...We found thespecies moderately common and generally flying about in twos,possibly mated pairs, near both camps and on the beach...
Robert K Selander 「Vertebrates from the Barrier Island of Tamaulipas, México」
...In the same way some of the best almond tumblerpigeons are bred from an almond cock mated to a yellow hen...
Harrison Weir 「Our Cats and All About Them」
...Usually a pair once mated remainmated for life and are very devoted to each other...
John H. Robinson 「Our Domestic Birds」
...A Leghorn male mated with aCochin female produces offspring each of which is in blood one halfLeghorn and one half Cochin...
John H. Robinson 「Our Domestic Birds」
...Most of thepigeons sold for breeding are young birds that have not yet mated...
John H. Robinson 「Our Domestic Birds」
...The other way is to sell thenumber of pairs desired, guaranteeing them as mated pairs—which meansthat the pairs are all known to be properly mated...
John H. Robinson 「Our Domestic Birds」
...In the trees and bushes mated birds werebuilding their nests...
James Oliver Curwood 「Baree, Son of Kazan」
...These two soon get together and the fly is once morefilled with mated, contented workers...
Carl Dare 「Profitable Squab Breeding」
...Keep all the best squabs hatched during the year,so cross-mating them as not to have nest mates mated up for breeding...
Carl Dare 「Profitable Squab Breeding」
... He located them, but it was only several staid old couples, along time mated, and busy with their nest-building...
Gene Stratton-Porter 「The Song of the Cardinal」
...A mated, banded pair of Seaside Sparrows in a dead marsh-elder bush near their nest...
Glen E. Woolfenden 「Comparative Breeding Behavior of Ammospiza caudacuta and A. maritima」
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