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2.do a.

#7627
Hunabashi, Chiba Prefecture, Japan Japan
30.08.2020
ssp. longipennis

Ad.

#10117
Mikoszewo Województwo pomorskie, Poland

immat.

#10118
Mikoszewo Województwo pomorskie, Poland

	Número	Más Larga	Individuo más pequeño	Individuo más grande
Primaria	10 Por ala	196.0 - 229.0mm n=12 Primaria₁₀ (83%) Primaria₁₀=Primaria₉ (17%)		5351
Secundaria	20-22 Por ala	81.0 - 92.0mm n=11 Secundaria₁₆ (27%) Secundaria₁₇ (27%) Secundaria₁₄ (18%) Secundaria₁₈ (9%) Secundaria₁₃ (9%) Secundaria₁₅=Secundaria₁₆ (9%)	4429
Rectriz	12	132.5 - 169.5mm n=9 Rectriz₆ (100%)		5351

wing length¹

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

primaries-index

wing length/longest primary ratio

hand-wing-index/primaries-index ratio

212 - 266mm n=14

62 - 69% n=12

59 - 65% n=11

Datos no disponibles

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: 212 - 266mm n=14

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: 62 - 69% n=12,

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

2.do a.

#4429
Walvis Bay Namibia
19.09.2018