...There can be no doubt that at times all threelive in the same burrow, and in dens that the hard-workingrodent first made... 
Ernest Thompson Seton 「Wild Animals at Home」
...Single egg laid at end of burrow in ground; no nest...
Chester A. Reed 「The Bird Book」
...Single egg laid at the end of athree foot burrow...
Chester A. Reed 「The Bird Book」
...Singleegg at the end of a long burrow...
Chester A. Reed 「The Bird Book」
...Single egg laid on a few oak leaves and pineneedles at the end of a three foot burrow...
Chester A. Reed 「The Bird Book」
...Breeds on Socorro, San Benito and CoronadoIslands, placing its eggs at the end of burrow...
Chester A. Reed 「The Bird Book」
...Nest of bits of dry dung at the end ofa deserted Prairie Dog burrow...
Chester A. Reed 「The Bird Book」
...Another would eat meat, fish, and used to burrow and grope underthe walls of the bungalow for worms and shells...
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
..." Sir Walter Elliot goes on to give a mostinteresting account of the construction of the burrows of thisanimal...
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...If you find where there is a burrow with a family of young foxes, watch them all you can during your leisure moments...
A. R. (Arthur Robert) Harding 「Fox Trapping」
...When using bait, if not setting in a bed, find a spot where little building is required to protect it--a hollow log or stump, the entrance to an old burrow, a niche in a ledge or hole under a rock...
A. R. (Arthur Robert) Harding 「Fox Trapping」
...On three occasions I have got his brush by going to the burrow about sundown and getting a good position near the burrow to wait for him to come out...
A. R. (Arthur Robert) Harding 「Fox Trapping」
...The wolverine makes its home in a burrow...
Elmer Harry Kreps 「Science of Trapping」
...Burrows of Megachile Willughbiella Kirby, in a piece of rotten willow; each burrow originally contained six cells, but two of the left-hand series have been lost...
Edward Saunders 「Wild Bees, Wasps and Ants」
... Their methods vary, some burrow in the ground, some in old wood, some in snail shells, some in bramble stems or straws or the hollow stems of various plants, some in holes or crevices in walls, etc...
Edward Saunders 「Wild Bees, Wasps and Ants」
...goes back into a burrow and lives there till the next spring, the males dying off before the winter...
Edward Saunders 「Wild Bees, Wasps and Ants」
...The beings who find a home in such localities are ofclosely allied species, chiefly a variety of worms, who burrow their wayinto the mud, and seem to court the miasma sofatal to other creatures...
Elizabeth Cabot Cary Agassiz 「Seaside Studies in Natural History」
ランダム例文：
confirm habitable bitters
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