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PERCH, measure. The length of sixteen feet and a half: a pole or rod of that length. Forty perches in length and four in breadth make an acre of land.

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Beside them, on laths and perches, sat nearly a hundred pigeons, all asleep, seemingly; but yet they moved a little when the robber maiden came.
No sooner had he passed their positions than the warriors clambered from their perches.
There was an instantaneous scattering of the four men who had carried it in, and from safe perches on top the wall they prepared to watch the performance.
Mr Wegg next modestly remarks on the want of adaptation in a wooden leg to ladders and such like airy perches, and also hints at an inherent tendency in that timber fiction, when called into action for the purposes of a promenade on an ashey slope, to stick itself into the yielding foothold, and peg its owner to one spot.
Flycatchers (Genus Tyrannus) use perches with an unobstructed view for sit-and-scan foraging (Fitch, 1950; Fitzpatrick, 1980; Feichtinger and Veech, 2013).
He seemed to prefer different perches for different times of the day.
height of fence posts), time spent on perches, whether the shrike attacked or gave up (flew from perch without initiating an attack) and, for attacks, the outcome (successful, unsuccessful, or unknown) for each hunting attempt.
Acquiring and maintaining a territory attractive to females for egg laying is critical to male reproductive success (Parr, 1983; Switzer, 2002), so males often battle for territories in spectacular dogfights, and for perches that provide the best access to these territories.
and fellow members of Boy Scout Troop 662 volunteered to set up owl boxes and perches Casselberry had built over the summer as part of his Eagle Scout Project to help reduce the rodent population at the Simi Valley Landfill and provide better habitat for owls in the area.
Within each territory, crown height, diameter at breast height (dbh), and species were recorded for trees used as song perches.
To test the idea systematically, Bruce Anderson of the University of KwaZulu-Natal in Pietermaritzburg, South Africa, and his colleagues closely monitored flowers in the wild, leaving some of them as they were and removing the perches from others.
But the bosses have been left all at sea as the gulls are now using the owls as perches.