Red Knot (Calidris canutus)

ország szűrő

United Arab Emirates

Afghanistan

Albania

Armenia

Angola

Austria

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Bosnia and Herzegovina

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Sicilia

Corsica

Sardegna

Xinjiang

#4698
Friedrichskoog-Spitze / Dithmarschen, Schleswig-Holstein, Germany
01.10.2019

#4705
Friedrichskoog-Spitze / Dithmarschen, Schleswig-Holstein, Germany
27.09.2019

	száma	leghosszabb	legkisebb egyed
elsődleges	10 szárnyanként	123.5 - 137.5mm n=24 E₉ (58%) E₁₀=E₉ (21%) E₁₀ (17%) E₁₀=E₉=E₁₀=E₉ (4%)
másodlagos	16 szárnyanként	83.5 - 100.5mm n=16 M₁₂ (63%) M₁₃ (19%) M₁₀ (6%) M₁₂=M₁₃ (6%) M₁₃=M₁₃ (6%)	4705
repülés	12	67.5 - 75.5mm n=11 R₆ (55%) R₅ (36%) R₅=R₆ (9%)	5550

wing length¹

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

primaries-index

wing length/longest primary ratio

hand-wing-index/primaries-index ratio

155 - 172mm n=9

54 - 59% n=8

48 - 53% n=16

nincs elérhető adat

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: 155 - 172mm 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: 54 - 59% 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