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The birds in a truck riddle is a riddle that asks whether a container or a truck carrying birds changes in weight when the birds inside are flying. [1] The television series MythBusters investigated the question in a 2007 episode, testing it both with a box of pigeons and again with a model helicopter. They concluded that the contents being in ...
Because it roosts in trees, it particularly likes regions where open areas are mixed with woodlots. It has no objection to human-altered habitats such as pastures and roadsides, and it often perches on fenceposts. [4] Although patchily distributed, it is common in many areas, with no population considered vulnerable.
Sometimes known as perching birds, passerines generally have an anisodactyl arrangement of their toes (three pointing forward and one back), which facilitates perching. With more than 140 families and some 6,500 identified species, [ 1 ] Passeriformes is the largest order of birds and among the most diverse clades of terrestrial vertebrates ...
Important perches and nest supports are provided by scattered larger trees or other features (e.g., power poles, woodland edges, standing dead trees, live trees, boulders, and saguaros). [22] The wild Harris's hawk population is declining due to habitat loss; however, under some circumstances, they have been known to move into developed areas. [23]
Trussed is the term used for domestic or game birds, implying the bird is tied up or caught in a net respectively, and is not applied to predator birds like the eagle and hawk. Perched is overt while sitting atop a charge. If a bird's attitude is not blazoned, it is assumed to be close; the exception is the eagle, whose default attitude is ...
The shoebill is a tall bird, with a typical height range of 110 to 140 cm (43 to 55 in) and some specimens reaching as much as 152 cm (60 in). Length from tail to beak can range from 100 to 140 cm (39 to 55 in) and wingspan is 230 to 260 cm (7 ft 7 in to 8 ft 6 in).
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