Duck is the common name for a large number of species in the waterfowl family Anatidae, which also includes swans and geese. The ducks are divided among several subfamilies in the family Anatidae; they do not represent a monophyletic group but a form taxon, since swans and geese are not considered ducks. Ducks are mostly aquatic birds, mostly smaller than the swans and geese, and may be found in both fresh water and sea water.
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87333014
拍攝者：
Chriskiely
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| 授權類型 | 尺寸 | 像素 | 格式 | 點數 | |
|---|---|---|---|---|---|
| 標準授權 | XS | 480 x 317 | JPG | 13 | |
| 標準授權 | S | 800 x 529 | JPG | 15 | |
| 標準授權 | M | 2130 x 1408 | JPG | 18 | |
| 標準授權 | L | 2862 x 1892 | JPG | 20 | |
| 標準授權 | XL | 3478 x 2299 | JPG | 22 | |
| 標準授權 | MAX | 4260 x 2816 | JPG | 23 | |
| 標準授權 | TIFF | 4047 x 2676 | TIF | 39 | |
| 進階授權 | UEL | 4260 x 2816 | JPG | 88 |
XS
S
M
L
XL
MAX
TIFF
UEL
| 標準授權 | 480 x 317 px | JPG | 13 點 |
| 標準授權 | 800 x 529 px | JPG | 15 點 |
| 標準授權 | 2130 x 1408 px | JPG | 18 點 |
| 標準授權 | 2862 x 1892 px | JPG | 20 點 |
| 標準授權 | 3478 x 2299 px | JPG | 22 點 |
| 標準授權 | 4260 x 2816 px | JPG | 23 點 |
| 標準授權 | 4047 x 2676 px | TIF | 39 點 |
| 進階授權 | 4260 x 2816 px | JPG | 88 點 |
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