The swallows, martins, and saw-wings, or Hirundinidae are a family of passerine songbirds found around the world on all continents, including occasionally in Antarctica. Highly adapted to aerial feeding, they have a distinctive appearance. Swallows are small birds with dark, glossy-blue backs, red throats, pale underparts and long tail streamers. They are extremely agile in flight and spend most of their time in the air. They are widespread breeding birds in the Northern Hemisphere, migrating south in winter. Swallow numbers in the UK have fluctuated over the last 30 years with strong regional variation in trends.
圖片編號:
309820260
拍攝者:
Russellfinneyphotography
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授權類型 | 尺寸 | 像素 | 格式 | 點數 | |
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標準授權 | XS | 480 x 339 | JPG | 13 | |
標準授權 | S | 800 x 566 | JPG | 15 | |
標準授權 | M | 2060 x 1456 | JPG | 18 | |
標準授權 | L | 2659 x 1880 | JPG | 20 | |
標準授權 | XL | 3364 x 2378 | JPG | 22 | |
標準授權 | MAX | 7360 x 5203 | JPG | 23 | |
標準授權 | TIFF | 10409 x 7358 | TIF | 39 | |
進階授權 | WEL | 7360 x 5203 | JPG | 88 | |
進階授權 | PEL | 7360 x 5203 | JPG | 88 | |
進階授權 | UEL | 7360 x 5203 | JPG | 88 |
XS
S
M
L
XL
MAX
TIFF
WEL
PEL
UEL
標準授權 | 480 x 339 px | JPG | 13 點 |
標準授權 | 800 x 566 px | JPG | 15 點 |
標準授權 | 2060 x 1456 px | JPG | 18 點 |
標準授權 | 2659 x 1880 px | JPG | 20 點 |
標準授權 | 3364 x 2378 px | JPG | 22 點 |
標準授權 | 7360 x 5203 px | JPG | 23 點 |
標準授權 | 10409 x 7358 px | TIF | 39 點 |
進階授權 | 7360 x 5203 px | JPG | 88 點 |
進階授權 | 7360 x 5203 px | JPG | 88 點 |
進階授權 | 7360 x 5203 px | JPG | 88 點 |