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Steppekiekendief
Circus macrourus
soort binnen Accipitridae


© Herbert Henderkes
aantal langste
handpen 10 per vleugel geen gegevens beschikbaar
armpen geen gegevens beschikbaar
staartpen 12
geen gegevens beschikbaar
wing length1 hand-wing-index1,2 (HWI) primaries-index wing length/longest primary ratio hand-wing-index/primaries-index ratio
334 - 388mm n=9 49 - 54% n=8 geen gegevens beschikbaar geen gegevens beschikbaar geen gegevens beschikbaar
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: 334 - 388mm 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: 49 - 54% 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


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mogelijk uitgestorven

Uzbekistan ·
source: IUCN 2025. IUCN Red List of Threatened Species. Version 2025-1 <www.iucnredlist.org>
assessment data: |

Accipitriformes
Hawks, eagles and old world vultures

beschermingsstatus

  • CITES
    bijlage 2
  • Verordening (EG) Nr. 865/2006
    appendix A
  • de Duitse Federale Natuurbeschermingsakte §44
    streng beschermd
  • listed in hunting law