Search results
Results from the WOW.Com Content Network
Bird measurement or bird biometrics are approaches to quantify the size of birds in scientific studies. The variation in dimensions and weights across birds is one of the fundamental sources of diversity among birds, and even Within species, dimensions may vary across populations within species , between the sexes and depending on age and ...
In this list of birds by common name 11,278 extant and recently extinct (since 1500) bird species are recognised. [1] Species marked with a "†" are extinct.
A large congregation of individuals of one or more species of bird that nest or roost in proximity at a particular location. Many kinds of birds are known to congregate in groups of varying size; a congregation of nesting birds is called a breeding colony. A group of birds congregating for rest is called a communal roost.
Among most groups of animals, male parental care is rare. In birds, however, it is quite common—more so than in any other vertebrate class. [77] Although territory and nest site defence, incubation, and chick feeding are often shared tasks, there is sometimes a division of labour in which one mate undertakes all or most of a particular duty ...
Potoos (family Nyctibiidae) are a group of birds related to the nightjars and frogmouths. They are sometimes called poor-me-ones , after their haunting calls . The family Nyctibiidae was formerly included with the nightjars in the order Caprimulgiformes but is now placed in a separate order, Nyctibiiformes .
It is 12.5–14.0 cm (4.9–5.5 in) in length; the male and female are identical in plumage, with an orange-toned red breast and face lined with grey, brown upper-parts and a whitish belly. Juveniles are distinct, freckled brown all over and without the red breast; first-winter immatures are like the adults, except for more obvious yellow-brown ...
[11] [12] The black swan , Cygnus atratus is a large waterbird which breeds mainly in the southeast and southwest regions of Australia . An estimated one-quarter of all black swans pairings are homosexual and they steal nests, or form temporary threesomes with females to obtain eggs, driving away the female after she lays the eggs.
The broad-tailed hummingbird, Selasphorus platycercus, is a member of the order Apodiformes, in the family Trochilidae. Hummingbird taxonomy has not been extensively studied, but its phylogenic division can be divided as a family into nine clades in which the broad-tailed hummingbird is a member of the "Bee group" and included in the Selasphorus genus.