any of numerous compact, prolonged-winged passerine birds in the family Hirundinidae, famous for his or her swift, graceful flight and with the extent and regularity in their migrations
Given that the species hasn't been reliably witnessed considering that 1980, it might currently be extinct.[forty six] Two insular species, the Bahama swallow and golden swallow, have declined as a consequence of forest decline and likewise Competitiveness with introduced species which include starlings and sparrows, which contend with these swallows for nesting websites. The golden swallow previously bred about the island of Jamaica, but was previous noticed there in 1989 and is now limited towards the island of Hispaniola.[forty seven]
They even have fairly extensive eyes, with their size Practically equaling their width. The very long eyes allow for for a rise in visual acuity with out competing with the Mind for Area inside of The top. The morphology of the eye in swallows is similar to that of the raptor.[17]
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包含'swallow'的习语 swallow a little something hook, line, and sinker a bitter pill to swallow swallow a bitter tablet swallow your pleasure one particular swallow would not produce a summer season
Species breeding in temperate locations migrate through the Wintertime when their insect prey populations collapse. Species breeding in more tropical spots are often a lot more sedentary, Whilst many tropical species are partial migrants or make shorter migrations. In antiquity, swallows ended up thought to get hibernated in a very point out of torpor, or perhaps they withdrew for that Winter season less than h2o. Aristotle ascribed hibernation don't just to swallows, but will also to storks and kites. Hibernation of swallows was viewed as a risk even by as acute an observer as Rev.
: any of various modest extensively dispersed oscine birds (household Hirundinidae, the swallow household) that have a brief Invoice, extended pointed wings, and often a deeply forked tail Which feed on insects caught about the wing
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plural swallows Britannica Dictionary definition of SWALLOW [rely] : an quantity which is swallowed at a single time She took a swallow
After you take a swallow, you lead to some thing to go from a mouth down into your tummy. Arabic: بَلْعَة
The outer tail feathers are elongated, offering the unique deeply forked "swallow tail". There exists a line of white spots through the outer conclusion of your higher tail.[6] The feminine is comparable in physical appearance to your male, although the tail streamers are shorter, the blue with the upperparts and breast band is less glossy, as well as underparts paler. The juvenile is browner and it has a paler rufous face and whiter underparts. sensa138 deposit pulsa In addition, it lacks the lengthy tail streamers from the Grownup.[seven]
The swallows commonly forage for prey around the wing, Nonetheless they once in a while snap prey off branches or on the bottom. The flight may very well be speedy and require a rapid succession of turns and banks when actively chasing quickly-going prey; significantly less agile prey may very well be caught using a slower, additional leisurely flight that includes flying in circles and bursts of flapping blended with gliding.
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The most common hirundine plumage is glossy dark blue or green above and simple or streaked underparts, normally white or rufous. Species that burrow or are now living in dry or mountainous parts will often be matte brown higher than (e.