"that resemble a crescent or a boomerang. Their call is a loud scream in two different tone pitches, the higher of which issues from the female. They often form 'screaming parties' during summer evenings, when 10–20 swifts will gather in flight around their nesting area, calling out and being answered by nesting swifts. Larger ""screaming parties"" are formed at higher altitudes, especially late in the breeding season. The purpose of these parties is uncertain, but may include ascending to sleep on the wing, while still breeding adults tend to spend the night in the nest. Swifts may nest in former"
"the Southern Ocean in 2002. The sound becomes a perfect habitat for migratory wading birds during the summer, when an estimated 2,000-3,000 birds flock to the area to feed in the shallow mudflats of the harbours. Some of the species that can be found during the summer months include the red-necked stint and the red knot as well as sandpipers, grey plovers, red capped plovers, lesser sand plovers, grey-tailed tattlers, whimbrels, common greenshanks, yellow-billed spoonbill, white-faced heron and stilts. Other birds that are commonly seen around the sound include cormorants, pied oystercatchers, sooty oystercatchers, Pacific gulls, Caspian terns, pelicans, ospreys"
"with) their mate, they launch into a peculiar dance. With excited high-pitched calls, they hover in unison, wings outstretched, over a favorite perch. This dance takes place several times a day over several days, over several separate sites in an area covering . The sites chosen for the dance appear to be the same sites used as hunting perches during the spring and summer. Cassin's kingbird Cassin's kingbird (""Tyrannus vociferans"") is a large tyrant flycatcher native to western North America. The name of this bird commemorates the American ornithologist John Cassin. Adults have a gray head with slightly darker cheeks;"
"Throughout June, July and early August encounters with mosquitoes (family ""Culicidae"") and deer flies (genus ""Chrysops"") are inevitable. Numerous passerine and songbirds such as the titmouse (""Baeolophus bicolor""), purple finch (""Haemorhous purpureus""), black-capped chickadee (""Poecile atricapillus""), jays/crows (family ""Corvidae""), wren (family ""Troglodytidae""), dove (family ""Columbidae""), woodpecker (family ""Picidae"") and thrush (family ""Turdidae"") have been spotted. Birds of prey encountered include owls, especially the barred owl (""Strix varia""), and hawks (mostly genus ""Buteo""). Throughout the day, but most frequently during the crepuscular and predawn hours, the trill and tremolo of the common loon (""Gavia immer"") can be heard on the pond."
"(10% of the world's population), Reddish Egrets (7% of the biogeographic population) and Peregrine Falcons (7% of the North American population)."" The best time to see the multitude of the park's bird migrants is during either early spring or fall and winter when thousands spend the winter there or migrate through. During the summer the most common birds are shore and marshbirds as well as some raptors and songbirds. The most common birds on the Gulf beach of the park during the year are the willet, sanderling, black skimmer, great blue heron, double-crested cormorant, cattle egret, grey plover, laughing gull,"
"spiral, and then glides down. Group neighbours will respond by performing the same type of flight, and eventually about half the group's members will depart to the meeting location where they will spend several tens of minutes – sometimes more than an hour – chattering, calling, duetting, and excitedly moving about the meeting site (which typically is some small tree or shrubbery). In winter, birds will often assemble in small groups and roost together, particularly to keep warm during the night; this is apparently not initiated with a specific assembly display however. The flight of the great grey shrike is"
"howling display call ""uooooh"", given by a single bird or a pair in duet, by night or during the day, and often from cover. Long sequences of up to 60 consecutive notes may be delivered during singing encounters between rival territorial birds. A great variety of quacking, clucking, hissing, rattling and purring calls are also given, with much individual variation. Breeding takes place in shallow freshwater lakes, bays of larger lakes, marshes, and other inland bodies of water, often less than in extent and less than deep. The red-necked grebe shows a preference for waters in forested areas or, further"
"breeding occurs on some of the other islands as well. Other breeding birds recorded on the islands include Little Penguins (""Eudyptula minor""), Black-winged Petrel (""Pterodroma nigripennis""), Silver Gulls (""Chroicocephalus novaehollandiae"") and Crested Tern (""Sterna bergii""). Migratory shorebirds that spend the summers at the Marine Park, like the Bar-tailed Godwit (""Limosa lapponica""), Eastern Curlew (""Numenius madagascariensis"") and the Ruddy Turnstone (""Arenaria interpres""), breed in Siberia, Alaska or the Arctic. Raptors such as the White-breasted Sea-eagle (""Haliaeetus leucogaster"") Brahminy kite (""Haliastur indus"") and Osprey are often seen hunting for fish in the Marine Park, and waterbirds such as herons and egrets (""Egretta"
"beds instead of the more usual trees, garganeys (typically two to three pairs), marsh harriers (three nesting females in 2017), hobbies, bearded tits and Cetti's, reed and sedge warblers. A winter evening roost of common starlings is one of the largest in the UK, and attracts visitors to see hundreds of thousands, sometimes millions, of these birds assemble before descending into the reed bed. Rare visitors to the reserve in recent years include a collared pratincole and a whiskered tern in 2016, a singing male pied-billed grebe in 2013, a blue-winged teal in 2012 and a squacco heron in 2011."
"butterflies, fruits, and seeds, often in company with starlings. Foraging is often done in groups of 3–6 birds. It has various calls and the sound is sometimes parrot-like: “skwieeer”, “kiiyerr”, a ringing and repetitious “tew”. In addition, variable sounds such as chuckles and whistles can be heard at breeding and roosting sites. The sounds are slow and drawn out. They also make trills: “tsu-weely-weely-wair”. They often perch in trees and hang upside-down and can be very noisy. Breeding and roosting is done in groups and they can be defensive against intruders, usually by making noise. Altercations are rarely fatal and"
"are most often recorded in pairs, and sometimes in groups of 3 and up to 10 birds, it is believed that pairs or family congregations may be more common outside of breeding season, and may range more widely over suitable areas of habitat. The cooperative breeding seen in other Maluridae has not been recorded in the wild in striated grasswrens. In captivity, members of family groups have been observed to allopreen and sunbathe together on branches, bathe in dry soil and fine water mists, and chase one-another around. Breeding is typically between July and November, but breeding outside of the"
"pointed crest. The bill, eyes, and feet are dark. The adults moult between August and November, but may suspend their moult and continue after migration. Calls are high-pitched, buzzing or trilling monosyllables. These are arboreal birds that breed in northern forests (Witmer and Avery 2003). Their main food is fruit, which they eat from early summer (strawberries, mulberries, and serviceberries) through late summer and fall (raspberries, blackberries, cherries, and honeysuckle berries) into late fall and winter (juniper berries, grapes, crabapples, mountain-ash fruits, rose hips, cotoneaster fruits, dogwood berries, and mistletoe berries) (MacKinnon and Phillipps 2000, Witmer and Avery 2003). They"
"on a rare occasion, have been recorded in a large flock conservatively estimated to number four hundred birds. They are more frequently observed congregating around water sources in small groups for drinking prior to and during the hottest parts of the day around mid-morning and noon. Congregations of larger groups occur during favourable seasonal conditions, with dispersal during less favourable conditions or when numbers build up in good seasons. Flocks appear to have regular home ranges, travelling to and from foraging and watering points as a group. It is thought that individuals may move between flocks, however the frequency of"
"dove, laughing dove, spotted owlet, rock pigeon, magpie robin, greater coucal, weaver bird, bank mynah, common mynah and green bee-eater. Every year over a hundred migratory bird species visit here to feed. In winter the sanctuary provides is a panorama of migratory birds such as Siberian crane, greater flamingo, ruff, black-winged stilt, common teal, common greenshank, northern pintail, yellow wagtail, white wagtail, northern shoveller, rosy pelican, spot-billed pelican, gadwall, wood sandpiper, spotted sandpiper, Eurasian wigeon, black-tailed godwit, spotted redshank, starling, bluethroat and long-billed pipit. In summer about 11 species of migratory birds such as Asian koel, black-crowned night heron, grey"
"park contains a variety of birds, reptiles, mammals and insects. Birds: resident birds: The more frequent species that can found here all the year is the little grebe, European shag, common kingfisher, water rail and peregrine falcon. In the Summer- Autumn season: Little ringed plover, red-backed shrike, Eurasian reed warbler and grasshopper warbler. In the Winter-Spring season: Great northern diver, great cormorant, black-necked grebe, red-breasted merganser, common shelduck, grey plover, dunlin, common snipe, Eurasian curlew, razorbill, common murre, reed bunting and some other Anatidae and gulls. Migratory birds: Due to there being a geographic point of interest for the migratory"
"include various biological families. Common bird species include hairy woodpeckers, great horned owls, blue grouses, common ravens, dark-eyed juncos, mountain chickadees, red-breasted nuthatches, brown creepers, Clark's nutcrackers, and grey jays, which are visible throughout the year; American kestrels, northern flickers, golden-crowned kinglets, Cordilleran flycatchers, Steller's jays, western tanagers, Swainson's thrushes, hermit thrushes, American robins, and rufous hummingbirds that frequent the area in the summer season; and mountain and western bluebirds in the fall and summer. Olive-sided flycatchers and chipping sparrows are common during the spring and summer seasons, while yellow-rumped warblers, pine siskins, and Cassin's finches can frequently be seen"
"which monitors the birds in the valley. Breeding birds include common chiffchaff (""Phylloscopus collybita""), common whitethroat (""Sylvia communis""), dunnock (""Prunella modularis""), Eurasian blackcap (""Sylvia atricapilla""), Eurasian wren (""Troglodytes troglodytes"") and sedge warbler (""Acrocephalus schoenobaenus""). Other birds found include brambling (""Fringilla montifringilla""), cirl bunting (""Emberiza cirlus""), common grasshopper warbler (""Locustella naevia""), Eurasian siskin (""Spinus spinus""), lesser redpoll (""Acanthis cabaret"") and subalpine warbler (""Sylvia cantillans""). Rareties ringed in the autumn of 2014 were aquatic warbler (""Acrocephalus paludicola""), barred warbler (""Sylvia nisoria"") and paddyfield warbler (""Acrocephalus agricola""). A first for Britain occurred on 8 October 2008 with the trapping, and the measuring of"
"stay together within flocks. Flocks increase in size in autumn and birds congregate at dusk for communal roosting, with up to several thousand individuals gathering at one site. At Uppsala, Sweden, 40,000 birds have been recorded at a single winter roost with mated pairs often settling together for the night. Western jackdaws frequently congregate with hooded crows or rooks, the latter particularly when migrating or roosting. They have been recorded foraging with the common starling (""Sturnus vulgaris""), Northern lapwing (""Vanellus vanellus""), and common gull (""Larus canus"") in northwestern England. Flocks are targets of coordinated hunting by pairs of lanner falcons"
"in the early morning before returning in the late evening. Flocks will often fly many kilometers between their feeding and roosting areas, and in desert areas must also fly to watering holes twice a day, while corellas which live in coastal areas do not have to fly long distances to find water. The call consists of high pitched notes and screeches somewhat similar to the sulfur-crested cockatoo. Large flocks will call simultaneously and can create a deafening screeching sound audible from several kilometers away. Breeding occurs from May to October, and usually takes place earlier in the north of its"
"year and others are summer visitors. Lapwings, gadwall and black-tailed godwits breed here as do the great crested grebe, the little grebe and the kingfisher, and there is a large colony of cormorants at the west end of the park. Small passerine birds nesting here include the reed warbler, the marsh warbler, the sedge warbler, the reed bunting, the willow tit, the bluethroat, the common grasshopper warbler and the Cetti's warbler. Other nesting species include the hobby hawk, the Eurasian sparrowhawk, the lesser spotted woodpecker, the cuckoo and the tawny owl. Near the water are dragonflies and in the water"
"the chopi blackbird (""Gnorimopsar chopi"") and the brown and yellow marsh bird (""Pseudoleistes virescens""). Parasitism of these other two species generally occurs in areas where the bay-winged cowbird is absent but can also occur in its presence. The three host species that can successfully raise screaming cowbirds are all cooperative breeders. ""Helpers"" at the nest provide assistance with chick feeding and with predator defense. Screaming cowbirds are monogamous and form stable pairs for the duration of the breeding season. As obligate brood parasites, they do not build their own nests, and instead, parasitize the nests of other species, predominantly the"
"large numbers to feed up prior to undertaking the return migration. At these times the birds will be transitioning out of and into their breeding plumage. The birds are pushed towards the hides as the water level rises with the tide and eventually they must fly off until the tide has receded once more. Red knot, sanderling, little stint, Ruff, marsh, Terek and Curlew sandpipers, ruddy turnstone, ringed and grey plover, greenshank, Eurasian whimbrel, Eurasian curlew and bar-tailed godwit are the most regular species. Little egret and South African shelduck are resident and can often be seen with the waders,"
"It is also known as the bush warbler or ""flower-viewing"" bird, for its appearance near the many cherry blossom trees in the area. In order to commemorate the three-year anniversary Motosu-city's amalgamation of Itonuki, Neo, Shinsei and Motosu, the municipal government began working on a theme song that best represented their vision of the future. The lyrics of the theme song, ""Habataite"", are intended to convey the ideas of nature and people living harmoniously together. The song is played every afternoon on the loudspeakers to warn children to return home before nightfall. The music was written by the world-renowned ocarina"
"is abundant. The rarest of the birds that live along the cliffs is the peregrine falcon. In recent decline and endangered, the skylark also makes its home on the cliffs. The cliffs are home to fulmars, which resemble gulls, and to colonies of black-legged kittiwake, a species of gull. Bluebird, as mentioned in the classic World War II song ""(There'll Be Bluebirds Over) The White Cliffs of Dover"" is an old country name for swallows and house martins, which make an annual migration to continental Europe, many of them crossing the English Channel at least twice a year. Among the"
"to branches like some thrushes. Birds in a covey roost and huddle together in trees, similar to babblers. Breeding has been recorded from April to July in India and from February to May in China. The male builds a scrape in bamboo, forest undergrowth or along water. The nest is lined or padded with grass. Three to five white eggs are laid. The rufous-throated partridge gives a rising series of ""hu-hu"" whistles. In a duet, the partner's call is ""kew-kew-kew"". The IUCN estimates that the species's population is declining because of habitat destruction and unsustainable hunting, but the decline is"
"dive down the valleys on open wings. In India, the breeding season is in summer, April to June. It is silent in winter but in spring, its call is a familiar part of the landscape. The song is a loud whistle with three parts with the tone ascending. They also make a rising, shrill piping call. When feeding they walk slowly up hill, picking up the tender blades of grass and young shoots of plants on the way. They have been noted feeding on the berries of ""Ephedra"", leaves of ""Artemisia"", grass shoots, bulbs and the heads of a rye-like"
"largest wintering populations of lesser sandhill cranes and Ross's geese within the Pacific Flyway. Each autumn over 20,000 cranes and 60,000 arctic-nesting geese terminate their annual migrations from Alaska and Canada to make the refuge home for six months. Here they mingle with thousands of other visiting waterfowl, waterbirds and shorebirds making the refuge a true winter phenomenon. The refuge also provides important breeding habitat for Swainson's hawks, tricolored blackbirds, marsh wrens, mallards, gadwalls, cinnamon teal, and burrowing owls. Tricolored blackbirds, a colonial-nesting songbird, breed in colonies of over 25,000 pairs. Coyotes, ground squirrels, desert cottontails, beavers, and long-tailed weasels"
"protruding grass stems, or occasionally in flight. Diet in the summer is mostly insects such as weevils, leafhoppers, leaf beetles, stinkbugs, caterpillars, moths and spiders. During the winter time the main diet consists of seeds of grasses and weeds such as northern dropseed, Indian grass, yellow foxtail, panic-grass, scorpion-grass, little bluestem, and big bluestem. Mating can start as early as late April but peaks in mid-May. Males will sing from the cover of dense grasses, perched on tall grass or in flight. Clutches range from two to six eggs with four being the most common. Incubation is done solely by"
"ground, mainly feeding on insects, and also eating scorpions, reptiles, small birds, rodents and fishes. Eating snakes and lizards as long as has been reported. The song, given while vibrating the wings, is a ""tiiiu"" or ""ki-ti-ti-ti"" trill, and a sharp ""cheerit"" is given when alarmed. The breeding season is mainly between September and April. A burrow nest is dug in a river bank, gully or road cutting. The family stays together for a few weeks after breeding. This species has a large range, stable population and no substantial threats, so the IUCN has assessed it as a least-concern species."
"between groups, coloration. These birds forage on the ground or in low bushes; particularly in winter they are also found in grazed low-growth grassland. They mainly eat seeds, but also eat insects in the breeding season. They are typically encountered as pairs or family groups in the breeding season, and assemble in flocks for the winter migration. The flight call is a thin ""seep"". ""Sensu lato"", the Savannah sparrow is considered a threatened species by the IUCN. The song is mixture of ""chirps"" and trills. Seventeen subspecies (including the large-billed sparrows) are currently recognized, though many are only described from"
"fall into three groups. The Central American ""culicivorus"" group (known as the stripe-crowned warbler) is essentially as described above, the southwestern ""cabanisi"" group (known as Cabanis's warbler) has grey upperparts and a white supercilium, and the ""aureocapillus"" group (known as the golden-crowned warbler) of the southeast, which has a white supercilium and orange-rufous crown stripe. The three groups are sometimes considered to be different species. These birds feed on insects and spiders. The song is a high thin ""pit-seet-seet-seet-seet"", and the call is a sharp ""tsip"". It lays two to four rufous-spotted white eggs in a domed nest in a"
"are migratory birds and 12 are passing. The most common breeding birds are nightingale, blackcap, great tit, European magpie, hooded crow, common blackbird, woodpigeon and great spotted woodpecker. Other bird species in the forest include pheasant, common kestrel, Eurasian sparrowhawk, tawny owl and common chaffinch. During the winter, hawks, common buzzards and song thrush also settle in the forest. Mammals include Eastern European hedgehog, moles, several species of shrews, various bats, the local brown subspecies of the red squirrel, wood mouse, yellow-necked mouse and least weasel. Altogether, there are 10 species of mammals in the forest, including hares which settled"
"fall concentration of migrating waterfowl and shorebirds. Usually by mid-April, mallards, pintails, and Canada geese are present in large numbers. Peak densities are reached in early May when as many as 100,000 waterfowl are using the refuge to feed, rest, and conduct their final courtship prior to nesting. The refuge also hosts several thousand lesser sandhill cranes and upwards of 8,000 swans. Northern phalaropes, dowitchers, godwits, whimbrels, snipe, yellowlegs, sandpipers, plovers, and dunlin are among the most abundant of shorebirds. Most of the ducks, geese, and shorebirds move north or west to nest in other areas of the state. About"