...Burrows 3 and 4 were occupied by adult birds that did not flush during the excavation of their burrows... 
Erwin E. Klaas 「Summer Birds From the Yucatan Peninsula」
...Taking its length and diameter into account, we find the excavation hasa total volume of about twelve cubic inches...
J. H. Fabre Bernard Miall 「Social Life in the Insect World」
...The larva hasjust left an excavation three times as deep, made in soil of the samekind, but offering a far greater resistance...
J. H. Fabre Bernard Miall 「Social Life in the Insect World」
...I see them attack the earth withthe curved talons of their fore-limbs, digging their claws into it andmaking such an excavation as the point of a thick needle would enter...
J. H. Fabre Bernard Miall 「Social Life in the Insect World」
...Theentire work of excavation is performed at a distance, under the body,whose shoulders are lying on the ground...
Jean Henri Fabre Alexander Teixeira de Mattos 「The Glow-Worm and Other Beetles」
...In partially denuded land where good spring growth ofEschscholtzia was in bloom at time of excavation...
Charles T. Vorhies and Walter P. Taylor 「Life History of the Kangaroo Rat」
...The tunnel was followed for about four feet, but no nest was found and thetunnel led under a thicket of oak brush which made further excavation impractical()...
Charles L. Douglas 「Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado」
...All contained ravines and rocky slopes that provided many placesof concealment (dens, burrows of larger animals, and suitable substratefor the excavation of earthen forms)...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...Digging begins with the excavation of a shallow formwhich is deepened or extended horizontally over a period of daysor weeks...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...I want to find something before we give up for to-day;” and hurrying on, leaving the two blacks to follow at their leisure, and, as it struck the boys, rather unwillingly, the excavation was reached...
George Manville Fenn 「Dead Man's Land」
...It builds a cone of mud, which dries and becomes very resistant, and it prepares at the summit an excavation open to the air; this is the nest...
Frédéric Houssay 「The Industries of Animals」
...The ground level was determinedby excavation, and is of course only approximate...
Cosmos Mindeleff 「The Repair Of Casa Grande Ruin, Arizona, in 1891」
...Toneennili made an excavation inside of thesweat house, put the boys into the hole, and placed a rock over the holeand built a fire over the rock...
James Stevenson 「Ceremonial of Hasjelti Dailjis and Mythical Sand Painting of the」
...The subsequent excavation before referred to, however,apparently disclosed an opening similar to the one described, and, likeit, filled nearly to the top with a large block...
Cosmos Mindeleff 「Casa Grande Ruin」
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