Instruct: Given a question, retrieve documents that can help answer the question.
Query: Can all birds fly?
Most birds can fly, which distinguishes them from almost all other vertebrate classes. Flight is the primary means of locomotion for most bird species and is used for searching for food and for escaping from predators. Birds have various adaptations for flight, including a lightweight skeleton, two large flight muscles, the pectoralis (which accounts for 15% of the total mass of the bird) and the supracoracoideus, as well as a modified forelimb (wing) that serves as an aerofoil.
The wings of all rails are short and rounded. The flight of those Rallidae able to fly, while not powerful, can be sustained for long periods of time, and many species migrate annually. The weakness of their flight, however, means they are easily blown off course, thus are common vagrants, a characteristic that has led them to colonize many isolated oceanic islands. Furthermore, these birds often prefer to run rather than fly, especially in dense habitat. Some are also flightless at some time during their moult periods.
With over 100 species of birds from all around the world, walk in Aviary is also home to a variety of free flying birds. The Birds Photo Corner in the aviary lets visitors take souvenir photos with a variety of macaws and cockatoos on weekends.
These indoor exhibits are home to fruit bats, the largest bat in the world, which are sometimes called flying foxes, as well as mousedeer and a Malayan tapir.
The birds-of-paradise are members of the family Paradisaeidae of the order Passeriformes. The majority of species are found in eastern Indonesia, Papua New Guinea, and eastern Australia. The family has 42 species in 15 genera. The members of this family are perhaps best known for the plumage of the males of the sexually dimorphic species (the majority), in particular the highly elongated and elaborate feathers extending from the beak, wings, tail or head. For the most part they are confined to dense rainforest habitat. The diet of all species is dominated by fruit and to a lesser extent arthropods. The birds-of-paradise have a variety of breeding systems, ranging from monogamy to lek-type polygamy.
Birds were considered the harbingers of spring, thus they were a commonplace pysanka motif. Birds of all kinds are the messengers of the sun and heaven. Birds are always shown perched, at rest, never flying (except for swallows and, in more recent times, white doves carrying letters). Roosters are symbols of masculinity, or the coming of dawn, and hens represent fertility.
The beel is a natural habitat to many varieties of birds. 219 species of birds including more than 70 migratory species are reported in the beel area. The largest congregations of aquatic birds can be seen, particularly in winter, with a reported recorded count of 19,000 water birds in a day. Some of the globally threatened species of birds like spotbilled pelican ("Pelecanus philippensis"), lesser adjutant stork ("Leptoptilos javanicus"), Baer’s pochard ("Aythya baeri"), Pallas' sea eagle ("Haliaeetus leucogaster"), greater adjutant stork ("Leptoptilos dubius").
This is a monotypic species. All tinamou are from the family Tinamidae, and in the larger scheme are also ratites. Unlike other ratites, tinamous can fly, although in general, they are not strong fliers. All ratites evolved from prehistoric flying birds, and tinamous are the closest living relative of these birds.
Hummingbirds are birds native to the Americas and constitute the biological family Trochilidae. They are among the smallest of birds, most species measuring in length. Indeed, the smallest extant bird species is a hummingbird, the bee hummingbird weighing less than .
The wing shape of "Pteranodon" suggests that it would have flown rather like a modern-day albatross. This is based on the fact that "Pteranodon" had a high aspect ratio (wingspan to chord length) similar to that of the albatross — 9:1 for "Pteranodon", compared to 8:1 for an albatross. Albatrosses spend long stretches of time at sea fishing, and use a flight pattern called "dynamic soaring" which exploits the vertical gradient of wind speed near the ocean surface to travel long distances without flapping, and without the aid of thermals (which do not occur over the open ocean the same way they do over land). While most of a "Pteranodon" flight would have depended on soaring, like long-winged seabirds, it probably required an occasional active, rapid burst of flapping, and studies of "Pteranodon" wing loading (the strength of the wings vs. the weight of the body) indicate that they were capable of substantial flapping flight, contrary to some earlier suggestions that they were so big they could only glide.
An immense number of bird species live in the Amazon rainforest and river basin (an area which is nominally home to one out of every ten known species of animal). Over 1,300 of these species are types of birds, which accounts for one-third of all bird species in the world. The diets of rainforest birds greatly differ between species, although, nuts, fruits and leaves are a common food for many birds in the Amazon. Birds migrate to the Amazon rainforest from the North or South. Amazon birds are threatened by deforestation since they primarily reside in the treetops. At its current rate of destruction, the rainforest will be gone in forty years. Human encroachment also negatively affects the habitat of many Amazonian birds. Agriculture and road clearings limits the habitable areas. Birds in the Amazon are distinguished by which layer of the rainforest they reside in. Each layer or community has unique plants, animals and ecosystems. Birds interact with other animals in their community through the food chain, competition, mating, altruism and symbiosis.
New Zealand had more species of flightless birds (including the kiwi, several species of penguins, the takahe, the weka, the moa, and several other extinct species) than any other such location. One reason is that until the arrival of humans roughly a thousand years ago, there were no large land predators in New Zealand; the main predators of flightless birds were larger birds.
Consideration should also be made to the issue of house cats and other predators, by placing the bird bath in a location where birds can see the area around it, and where there are no hiding places for predators. Birds cannot fly well when their feathers are wet, so it's best to allow 2 feet of open space on all sides of the bath, so that birds can see danger coming with enough time to escape.
Birds were almost always shown in full profile, stylized, but with characteristic features of the species. Partial representations of some birds––mostly domestic fowl––are often seen on pysanky. Bird parts (eyes, feet, beaks, combs, feathers) are said carry the same meaning as the entire bird. Thus hen's feet represent fertility and the rooster's comb signifies masculinity.
The Paridae are mainly small stocky woodland species with short stout bills. Some have crests. They are adaptable birds, with a mixed diet including seeds and insects.
Only birds that are considered to have established, self-sustaining, wild populations in Kansas are included on this list. This means that birds that are considered probable escapees, although they may have been sighted flying free in Kansas, are not included.
There are over 100 species of birds, of which ten are endemic. Many birds are passing vagrants, such as the great cormorant ("Phalacrocorax carbo"). Others, like the lesser frigatebird ("Fregata ariel"), are more regular visitors. Bird populations are threatened due to the invasive yellow crazy ant, and reports have suggested that the ant has attacked hatchlings and harassed adults in their nests. All endemic bird species have been placed on the critically endangered list.
The birds of New Zealand evolved into an avifauna that included a large number of endemic species. As an island archipelago New Zealand accumulated bird diversity and when Captain James Cook arrived in the 1770s he noted that the bird song was deafening. The mix includes species with unusual biology such as the kakapo which is the world's only flightless, nocturnal, lek breeding parrot, but also many species that are similar to neighboring land areas. Some of the more well known and distinctive bird species in New Zealand are the kiwi, kea, takahe, kakapo, mohua, tui and the bellbird. The tuatara is a notable reptile endemic to New Zealand.
About 400 bird species have been recorded in Ireland. Many of these species are migratory. There are Arctic birds, which come in the winter, and birds such as the swallow, which come from Africa in the summer to breed. Many birds which are common residents in Britain and continental Europe are rare or unusual in Ireland, examples include the tawny owl, willow tit, marsh tit, nuthatch, and all woodpecker species except the recently established great spotted woodpecker. These are birds which do not move great distances and their absence may be due to Ireland's early isolation, but also Ireland's mild weather means early breeding and choice of best habitats which gives residents an advantage over visitors.
This rail is a skulking species, its streaked plumage making it difficult to see in its wetland habitat. Its laterally compressed body allows it to slip though the densest vegetation, and it will "freeze" if surprised in the open. It walks with a high-stepping gait, although it adopts a crouch when it runs for cover. It swims, when necessary, with the jerky motion typical of rails, and it flies short distances low over the reeds with its long legs dangling. Although their flight looks weak, water rails are capable of long sustained flights during their nocturnal migrations, and are sometimes killed in collisions with lighthouses or wires. British-ringed birds have been recovered from as far away as Poland, Czechoslovakia and Sweden.
472 species of birds have been recorded in Trinidad and Tobago (and the list of recorded species seems be still slowly increasing from year to year). There are few places in the world where so many birds can be seen in such a small area (with probably one of the highest bird species to area ratios of any country). Many of the species are very rare or are of particular interest. They range from the many species of hummingbirds to the primitive cave-dwelling oilbird (that uses sonar to fly in the dark) to the spectacularly beautiful scarlet ibis. The islands are within a few miles of Venezuela, and the species are therefore typical of tropical South America. However, the variety (although quite exceptional for such a small geographic area) is somewhat impoverished compared to the mainland, as would be expected with small islands.
All dinosaurs lay amniotic eggs with hard shells made mostly of calcium carbonate. Eggs are usually laid in a nest. Most species create somewhat elaborate nests, which can be cups, domes, plates, beds scrapes, mounds, or burrows. Some species of modern bird have no nests; the cliff-nesting common guillemot lays its eggs on bare rock, and male emperor penguins keep eggs between their body and feet. Primitive birds and many non-avialan dinosaurs often lay eggs in communal nests, with males primarily incubating the eggs. While modern birds have only one functional oviduct and lay one egg at a time, more primitive birds and dinosaurs had two oviducts, like crocodiles. Some non-avialan dinosaurs, such as "Troodon", exhibited iterative laying, where the adult might lay a pair of eggs every one or two days, and then ensured simultaneous hatching by delaying brooding until all eggs were laid.
What can be said is that "Foro", with its stocky body and rather weak flight apparatus was in all likelihood a bird that did not fly vast distances. Consequently, it is not very likely that it is congeneric with "Hoatzi", as North and South America were still separate by some of shallow seas and the Central American island arc when these birds lived, and seem to have shared only strong-flying and highly migratory genera such as seabirds. Being able to fly at all would still enable even a rather sedentary bird lineage to spread across all of the Americas by then of course; "Foro" and "Hoatzi" seem to be distinct genera, but nonetheless in some way related and possibly quite closely so.
The variegated tinamou is a monotypic species. All tinamou are from the family Tinamidae, and in the larger scheme are also ratites. Unlike other ratites, tinamous can fly, although in general, they are not strong fliers. All ratites evolved from prehistoric flying birds, and tinamous are the closest living relative of these birds.
The Bartlett's tinamou is a monotypic species. All tinamou are from the family Tinamidae, and in the larger scheme are also ratites. Unlike other ratites, tinamous can fly, although in general, they are not strong fliers. All ratites evolved from prehistoric flying birds, and tinamous are the closest living relative of these birds.
All tinamou are from the family Tinamidae, and in the larger scheme are also ratites. Unlike other ratites, tinamous can fly, although in general, they are not strong fliers. All ratites evolved from prehistoric flying birds, and tinamous are the closest living relative of these birds. Formerly, this bird was divided into two subspecies: "T. s. pernambucensis" in north-east Brazil (Pernambuco and Alagoas), and "T. s. solitarius" found in south-east Paraguay and extreme north-east Argentina. The former, however, turned out to be not distinct from the nominate but rather individual birds that showed a particular color morph which is now known to also occur elsewhere. Notably, the hue of the back varies between olive and rusty, and the intensity of the lower neck's plumage color also varies. The black barring in these areas is more or less strong. "pernambucensis" refers to yellower birds with much barring, especially on the neck.