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Eastern bluebird at the entrance of a nest box. A nest box, also spelled nestbox, is a man-made enclosure provided for animals to nest in. Nest boxes are most frequently utilized for birds, in which case they are also called birdhouses or a birdbox/bird box, but some mammals such as bats may also use them.
Measuring the culmen. The upper margin of the beak or bill is referred to as the culmen.The measurement is taken using calipers with one jaw at the tip of the upper mandible and the other at the base of the bill (at the junction with the skull, a measurement called "total culmen") or where the feathers begin (a measurement called "exposed culmen").
Dovecote at Nymans Gardens, West Sussex, England A dovecote at Najafabad, Iran Pigeon tower in Kavastu, Estonia (built 1869) A dovecote at Mazkeret Batya, Israel A dovecote or dovecot / ˈ d ʌ v k ɒ t /, doocot or columbarium is a structure intended to house pigeons or doves. [1]
In falconry, a mews is a birdhouse designed to house one or more birds of prey. [1] [2] In falconry there are two types of mews: the freeloft mews and traditional mews. Traditional mews usually consist of partitioned spaces designed to keep tethered birds separated with perches for each bird in the partitioned space.
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Five of the aviaries are completely open: in two of the largest the uncaged public walks through the habitat with birds freely overhead. [11] The Henry Doorly Zoo's Simmons Aviary opened in 1983 and is one of the world's largest free-flight aviaries. About 500 birds from all parts of the world occupy the area of the aviary.
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A multi-purpose opening terminating at the vent at the posterior of a bird: birds expel waste from it; most birds mate by joining cloaca (a "cloacal kiss "); and females lay eggs from it. Birds do not have a urinary bladder or external urethral opening and (with exception of the ostrich ) uric acid is excreted from the cloaca, along with faeces ...