キョクアジサシ (Sterna paradisaea)

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Xinjiang

幼鳥

#2396
Büsum Dithmarschen, Schleswig-Holstein, Germany
17.07.2017

成鳥

#2391
Büsum
17.07.2017

	数	最長	最小の個体	最大の個体
初列風切	10 /翼	214.5 - 232.0mm n=11 P₁₀ (100%)	11892	2964
次列風切	19 /翼	80.0 - 85.5mm n=8 S₁₃ (50%) S₁₄ (25%) S₁₁=S₁₂=S₁₃ (13%) S₁₂ (13%)	4428	2964
尾羽	12	163.5 - 199.5mm n=10 T₆ (100%)	2397	2964

wing length¹

hand-wing-index^1,2 (HWI)

primaries-index

wing length/longest primary ratio

hand-wing-index/primaries-index ratio

250 - 271mm n=9

65 - 71% n=8

61 - 67% n=11

データがありません

detailed information

The wing length is measured on the flattened and straightened wing ("maximum chord") from the carpal joint to the tip of the longest primary feather, the so-called "Kleinschmidt-method".

combined data from:
Avonet¹: 250 - 271mm n=9

The hand-wing-index, introduced by Kipp 1959, is calculated as the ratio of the hand length (difference between the length of the longest primary and the first secondary) to the wing length.

combined data from:
Avonet¹: 65 - 71% n=8,

The primaries-index is calculated as the ratio of the longest primary feather length to the first (outermost) secondary. It is the equivalent of the hand-wing index for feather measurements.

The wing length/longest primary ratio is calculated as the ratio of the wing length to the length of the longest primary feather.

The hand-wing-index/primaries-index ratio is calculated as the ratio of the hand-wing index to the primaries-index.

¹ Tobias, J. A., et al. (2022). AVONET: morphological, ecological and geographical data for all birds.
² Kipp, Friedrich A.: "Der Handflügel-Index als flugbiologisches Maß", erschienen in "Vogelwarte - Zeitschrift für Vogelkunde", 1959, Band 20, Heft 1

成鳥

#4428
Walvis Bay Namibia
20.09.2018