Sand martin / Bank swallow | |
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Sand martin at its nest hole, Brittany, France | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Aves |
Order: | Passeriformes |
Family: | Hirundinidae |
Genus: | Riparia |
Species: | R. riparia |
Binomial name | |
Riparia riparia | |
Subspecies | |
Four; see text | |
Range of R. riparia Breeding Migration Nonbreeding | |
Synonyms | |
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The sand martin (Riparia riparia), also known as collared sand martin or common sand martin, and in the Americas as the bank swallow, is a migratory passerine bird in the swallow family Hirundinidae. It has a wide range in summer, embracing practically the whole Holarctic area, from Europe, across Asia to the Pacific Ocean, and throughout North America. It winters in eastern and southern Africa, southern Asia, and South America.
This species was first described by Carl Linnaeus in his 1758 10th edition of Systema Naturae, and originally named Hirundo riparia; the description consisted of the simple "H[irundo] cinerea, gula abdomineque albis" ("an ash-grey swallow, with white throat and belly") and the type locality was simply given as "Europa", [3] subsequently refined to refer to Linnaeus's homeland of Sweden. [4] The specific name means "of the riverbank"; it is derived from the Latin ripa "riverbank". [5]
There are three or four weakly-defined subspecies: [6] [7]
The pale martin Riparia diluta of northern India and southeastern China was formerly sometimes included as another subspecies within sand martin. [8] It is smaller, and has paler grey-brown upperparts and a less distinct breast band. It winters in Pakistan, southern India and Sri Lanka. [9] [7]
The sand martin is brown above, white below with a narrow brown band on the breast; the bill is black, the legs brown. The young have rufous tips to the coverts and margins to the secondaries.
Its brown back and breast band, white throat, small size and quick jerky flight separate it from similar swallows, such as the common house martin (Delichon urbicum), the American cliff swallow (Petrochelidon pyrrhonota) and the tree swallow (Tachycineta bicolor). The other species of Riparia are more similar; the sand martin generally only occurs them in the wintering range, though there is breeding range overlap with pale martin in central Asia, with both species sharing mixed colonies without interbreeding. [7] The banded martin (Neophedina cincta) of sub-Saharan Africa is very similar in plumage pattern, but is markedly larger, nearly double the weight. [4]
The song is a continuous gravelly twittering when the birds are on the wing and becomes a conversational undertone after they have settled in the roost. The harsh alarm is heard when a passing falcon, crow or other suspected predator requires combined action to drive it away.
Linnaeus already remarked on this species' breeding habits: Habitat in Europae collibus arenosis abruptis, foramine serpentino ("it lives in Europe, in winding holes in sheer sandy hills"). It has been observed that sand martins favour loess as a particular type of ground to nest in. [10] Sand martins are generally found near larger bodies of water, such as rivers, lakes or even the ocean, throughout the year. [3] [11]
In Britain, the sand martin is the first of its family to appear on its breeding grounds, arriving from the middle of March, a week or two in advance of the barn swallow. In northern Ohio, they arrive in numbers by mid-April, about 10 days earlier than they did 100 years ago. [12] [13] At first, they flit over the larger bodies of water alone, in search of early flies. Later parties accompany other swallow species, but for a time, varying according to weather, the birds remain at these large waters and do not visit their nesting haunts. The sand martin departs early, at any rate from its more northerly haunts. In August, the gatherings at the nightly roost increase enormously, though the advent and departure of passage birds causes great irregularity in numbers. They are essentially gone from their breeding range by the end of September.
Their food consists of small insects, mostly gnats and other flies whose early stages are aquatic.
The sand martin is sociable in its nesting habits; from a dozen to many hundred pairs will nest close together, according to available space. The nests are at the end of tunnels ranging from a few inches to three or four feet in length, bored in sand or gravel. The actual nest is a litter of straw and feathers in a chamber at the end of the burrow; it soon becomes a hotbed of parasites. Four or five white eggs are laid about mid-late May, and a second brood is usual in all but the most northernly breeding sites.
Globally, it is not rare and classified as a species of least concern (but noted to be decreasing) [14] by the IUCN. [1] It does have some national and local protections, as certain populations have declined or face threats from habitat loss and fragmentation. In Canada, it is listed as Threatened under Schedule 1 of the federal Species at Risk Act (SARA) due to the loss of 98% of its Canadian population over the past 40 years. [15] They are considered threatened in California, where populations exist in the Sacramento Valley [16] and at two coastal sites, Año Nuevo State Park and Fort Funston. [17]
The common swift is a medium-sized bird, superficially similar to the barn swallow or house martin but somewhat larger, though not stemming from those passerine species, being in the order Apodiformes. The resemblances between the groups are due to convergent evolution, reflecting similar contextual development. The swifts' nearest relatives are the New World hummingbirds and the Southeast Asian treeswifts.
The barn swallow is the most widespread species of swallow in the world, occurring on all continents, with vagrants reported even in Antarctica. It is a distinctive passerine bird with blue upperparts and a long, deeply forked tail. In Anglophone Europe, it is just called the swallow; in northern Europe, it is the only member of family Hirundinidae called a "swallow" rather than a "martin".
The fieldfare is a member of the thrush family Turdidae. It breeds in woodland and scrub in northern Europe and across the Palearctic. It is strongly migratory, with many northern birds moving south during the winter. It is a very rare breeder in the British Isles, but winters in large numbers in the United Kingdom, Southern Europe, North Africa and the Middle East. It is omnivorous, eating a wide range of molluscs, insects and earthworms in the summer, and berries, grain and seeds in the winter.
The western house martin, sometimes called the common house martin, northern house martin or, particularly in Europe, just house martin, is a migratory passerine bird of the swallow family which breeds in Europe, north Africa and across the Palearctic; and winters in sub-Saharan Africa and tropical Asia. It feeds on insects which are caught in flight, and it migrates to climates where flying insects are plentiful. It has a blue head and upperparts, white rump and pure white underparts, and is found in both open country and near human habitation. It is similar in appearance to the two other martin species of the genus Delichon, which are both endemic to eastern and southern Asia. It has two accepted subspecies.
The Eurasian wryneck or northern wryneck is a species of wryneck in the woodpecker family. They mainly breed in temperate regions of Europe and Asia. Most populations are migratory, wintering in tropical Africa and in southern Asia from Iran to the Indian subcontinent, but some are resident in northwestern Africa. It is a bird of open countryside, woodland and orchards.
The common redshank or simply redshank is a Eurasian wader in the large family Scolopacidae.
The Eurasian spoonbill, or common spoonbill, is a wading bird of the ibis and spoonbill family Threskiornithidae, native to Europe, Africa and Asia. The species is partially migratory with the more northerly breeding populations mostly migrating south for the winter.
The black tern is a small tern generally found in or near inland water that breeds in Europe, Western Asia and North America. In winter the birds migrate to coastal areas of Africa and South America.
The Eurasian crag martin or just crag martin is a small passerine bird in the swallow family. It is about 14 cm (5.5 in) long with ash-brown upperparts and paler underparts, and a short, square tail that has distinctive white patches on most of its feathers. It breeds in the mountains of southern Europe, northwestern Africa and across the Palearctic. It can be confused with the three other species in its genus, but is larger with brighter tail spots and different plumage tone. Many European birds are resident, but some northern populations and most Asian breeders are migratory, wintering in northern Africa, the Middle East or India.
The brown-throated martin or brown-throated sand martin is a small passerine bird in the swallow family, Hirundinidae, that is widely distributed across Africa. It was formerly regarded as conspecific with the grey-throated martin and the Madagascar martin.
The grey-breasted martin is a large swallow from Central and South America.
The dusky crag martin is a small passerine bird in the swallow family. It is about 13 cm (5 in) long with a broad body and wings, and a short square tail that has small white patches near the tips of most of its feathers. This martin has sooty-brown upperparts and slightly paler underparts. The two subspecies are resident breeding birds in South Asia from the Indian subcontinent to southwestern China and the northern parts of Thailand, Vietnam and Laos.
The rock martin is a small passerine bird in the swallow family that is resident in central and southern Africa. It breeds mainly in the mountains, but also at lower altitudes, especially in rocky areas and around towns, and, unlike most swallows, it is often found far from water. It is 12–15 cm (4.7–5.9 in) long, with mainly brown plumage, paler-toned on the upper breast and underwing coverts, and with white "windows" on the spread tail in flight. The sexes are similar in appearance, but juveniles have pale fringes to the upperparts and flight feathers. The former northern subspecies are smaller, paler, and whiter-throated than southern African forms, and are now usually split as a separate species, the pale crag martin. The rock martin hunts along cliff faces for flying insects using a slow flight with much gliding. Its call is a soft twitter.
The banded martin or banded sand martin is a small passerine bird in the swallow family Hirundinidae that is endemic to Africa. It is the only species placed in the genus Neophedina.
Riparia is a genus of passerine birds in the swallow family Hirundinidae.
The Congo martin or Congo sand martin is a small passerine bird in the swallow family.
The crag martins are four species of small passerine birds in the genus Ptyonoprogne of the swallow family. They are the Eurasian crag martin (P. rupestris), the pale crag martin (P. obsoleta), the rock martin (P. fuligula) and the dusky crag martin (P. concolor). They are closely related to each other, and have formerly sometimes been considered to be one species. They are closely related to the Hirundo barn swallows and are placed in that genus by some authorities. These are small swallows with brown upperparts, paler underparts without a breast band, and a square tail with white patches. They can be distinguished from each other on size, the colour shade of the upperparts and underparts, and minor plumage details like throat colour. They resemble the sand martin, but are darker below, and lack a breast band.
The Nepal house martin is a non-migratory passerine of the swallow family Hirundinidae. Its two subspecies breed in the Himalayas from northwestern India through Nepal to Myanmar, northern Vietnam, and just into China. It occurs in river valleys and rugged wooded mountain ridges at heights between 1,000–4,000 m (3,300–13,100 ft) altitude, where it nests in colonies beneath overhangs on vertical cliffs, laying three or four white eggs in an enclosed mud nest.
The pale crag martin is a small passerine bird in the swallow family that is resident in Northern Africa and in Southwestern Asia, east to Pakistan. It breeds mainly in the mountains, but also at lower altitudes, especially in rocky areas and around towns. Unlike most swallows, it is often found far from water. It is 12–13 cm long, with mainly brown plumage, paler-toned on the upper breast and underwing coverts, and with white "windows" on the spread tail in flight. The sexes are similar in appearance, but juveniles have pale fringes to the upperparts and flight feathers. It was formerly considered to be the northern subspecies of the rock martin of southern Africa, although it is smaller, paler, and whiter-throated than that species. The pale crag martin hunts along cliff faces for flying insects using a slow flight with much gliding. Its call is a soft twitter.
The purple martin is a passerine bird in the swallow family Hirundinidae. It is the largest swallow in North America. Despite its name, the purple martin is not truly purple. The dark blackish-blue feathers have an iridescent sheen caused by the diffraction of incident light giving them a bright blue to navy blue or deep purple appearance. In some light, they may even appear green in color.