Brzegówka

Brzegówki są najmniejszymi europejskimi jaskółkami, z ciemnobrązową górną częścią ciała i ciemnym spodem skrzydeł, kontrastującym z bladym spodem ciała, przedzielonym charakterystyczną ciemną pręgą na piersi.

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Basic information

Brzegówki są najmniejszymi europejskimi jaskółkami, z ciemnobrązową górną częścią ciała i ciemnym spodem skrzydeł, kontrastującym z bladym spodem ciała, przedzielonym charakterystyczną ciemną pręgą na piersi. Agile fliers, feeding mainly over water, they will perch on overhead wires or branches. They are gregarious in the breeding season and winter. During the past 50 years the European population has crashed on two occasions as a result of drought in the birds’ African wintering grounds.

There are eight subspecies within this species.

Population size: 10.000.000-500.000.000 (the European population size: . 7.280.000-16.000.000) mature individuals
Population trend: decreasing
Red List Category: Least Concern

What do they eat?
Invertebrates, taken on the wing.
Small insects, mostly gnats and other flies, normally over water, occasionally terrestrial or aquatic insects or insects’ larvae

Identifying features:
Feather colour: Brown, Cream/buff, White
Leg colour: Brown
Beak: Black, Short, Thin
Natural habitats: Farmland Wetland; open spaces near larger bodies of water, sandy riverbanks, cliffs, gravel pits, sand pits

Nesting

Sand martins are very gregarious and nest in colonies, which may contain more than 100 pairs. They excavate tunnels in sandy, dry vertical banks in sand pits and gravel pits, railway cuttings, riverbanks and sea-cliffs, and exceptionally in drainpipes in walls, and holes in brickwork. 

Both males and females make a horizontal tunnel 45-90 cm long with a chamber at the end. Suitable sites may be used for years. New tunnels will be dug as the cliff collapses, or as old holes become too big (when they may be taken over by sparrows or starlings).

Fledging chicks

The white eggs, usually four or five, sometimes three to seven, are generally laid in late May or early June in a nest of feathers, grass and leaves. Incubation is by both parents once the last egg is laid, and lasts for about 14 days. All eggs hatch at the same time.

The young are helpless and remain in the nest. They are bed by both parents and fledge when 19-24 days old. After fledging, they are dependent on the parents for about one week. Usually two broods are raised each summer.

Migration information

Sand Martins are strongly migratory, with many making journeys of several thousand kilometres each year. Unlike other passerines, they migrate mostly by day stopping frequently en route to refuel. Before crossing barriers, such as the Sahara Desert or the Mediterranean Sea they will fuel for several days to ensure they have enough fat for the crossing. The amount of fat they lay down is closely correlated with the size of the barrier, carrying excess fat is extremely costly in terms of impaired flight performance. During migration, and in their winter quarters, birds will gather in large roosts, particularly in reedbeds and some types of crop for the night. This gregariousness is carried over into the breeding season, with most species nesting colonially to some extent.

Sand martins are summer visitors to Europe. they are one of the first spring migrants to appear in Europe, arriving mid-March to mid-April, with late arrivals up until June.

The birds depart their breeding grounds from late July to September. Most are thought to winter in the Sahel, the zone south of Sahara, where they feed in damp places that offer plentiful supplies of flying insects.

Brzegówka

71 obserwacje

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Species

Cuckoo

  • Sightings: 191
  • Total Birds: 100366

White Stork

  • Sightings: 176
  • Total Birds: 6438

Sand martin

  • Sightings: 71
  • Total Birds: 1533

Barn Swallow

  • Sightings: 509
  • Total Birds: 3396

Swift

  • Sightings: 94
  • Total Birds: 1043

Bee Eater

  • Sightings: 19
  • Total Birds: 317

Common Ringed Plover

  • Sightings: 8
  • Total Birds: 31

  • Sightings: 1
  • Total Birds: 0

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Species Fact Sheet

Brzegówka

Scientific Name
Riparia riparia
Length
11-12cm
Wing Span
25-33cm
Weight
14g
Distribution
BREEDS : Eurasia, north Africa and north America WINTERS: south to southern Africa, south Asia and south America
Conservation Status
Globally least concern
Habitat
Open country, usually near water
European Spring Migration
Typically March to late April
African Spring Migration
Typically June to mid October
Number Broods
1-2
Egg Size
18x13mm weight: 1,4g (of which 5% is shell)
Clutch Size
4-5 eggs
Incubation period
14-15 days by male and female
Fledgling period
19-21 days as altricial, downy
Maximum Age
7 years 9 months 1 day (from ringing data set in 1998)
Typical Life Span
2 years with typical breeding at 1 year

Serwisy Partnerów Spring Alive