Flight Speed of Ross's Gull, Rhodostethia rosea, and Sabine's Gull, Larus sabini

I report here for the first time measured flight speeds of Ross's and Sabine's gulls, obtained by optical range finder on the northeast Taymyr peninsula, Siberia. For two flocks of Ross's gulls, airspeeds were 12.2 m/s and 14.6 m/s. Mean airspeed for the Sabine's gulls was 13.9 m...

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Published in:ARCTIC
Main Author: Hedenström, Anders
Format: Article in Journal/Newspaper
Language:English
Published: The Arctic Institute of North America 1998
Subjects:
Online Access:https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64126
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author Hedenström, Anders
author_facet Hedenström, Anders
author_sort Hedenström, Anders
collection Unknown
container_issue 3
container_title ARCTIC
container_volume 51
description I report here for the first time measured flight speeds of Ross's and Sabine's gulls, obtained by optical range finder on the northeast Taymyr peninsula, Siberia. For two flocks of Ross's gulls, airspeeds were 12.2 m/s and 14.6 m/s. Mean airspeed for the Sabine's gulls was 13.9 m/s (SD=3.4 m/s. N=6). A comparison of these measured airspeeds with characteristic speeds predicted from aerodynamic theory showed that the Sabine's gulls were flying significantly faster than predicted minimum power speed, but their speed was not significantly different from maximum range speed. Sabine's gulls adjusted the airspeed in relation to head- and tailwinds, which is in agreement with aerodynamic theory. Je rapporte ici pour la première fois les mesures de vitesse de vol de la mouette rosée et de la mouette de Sabine, prises au télémètre optique dans la presqu'île de Taïmyr en Sibérie. Pour deux volées de mouettes rosées, la vitesse dynamique était de 12,2 m/s et de 14,6 m/s. La vitesse moyenne pour les mouettes de Sabine était de 13,9 m/s (écart-type = 3,4 m/s, N = 6). Une comparaison de ces mesures de vitesse de vol avec les vitesses caractéristiques prédites d'après la théorie aérodynamique montrait que les mouettes de Sabine volaient bien plus vite que la vitesse minimum prédite, mais que cette vitesse n'était pas très différente de la gamme maximum de vitesses. Les mouettes de Sabine ajustaient leur vitesse de vol en fonction des vents de face ou arrière, ce qui correspond à la théorie aérodynamique.
format Article in Journal/Newspaper
genre Arctic
Larus sabini
Sabine's Gull
Taymyr
Taymyr Peninsula
Siberia
genre_facet Arctic
Larus sabini
Sabine's Gull
Taymyr
Taymyr Peninsula
Siberia
geographic Taymyr
geographic_facet Taymyr
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language English
long_lat ENVELOPE(89.987,89.987,68.219,68.219)
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op_source ARCTIC; Vol. 51 No. 3 (1998): September: 201–300; 283-285
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publisher The Arctic Institute of North America
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spelling ftunivcalgaryojs:oai:journalhosting.ucalgary.ca:article/64126 2025-06-15T14:14:54+00:00 Flight Speed of Ross's Gull, Rhodostethia rosea, and Sabine's Gull, Larus sabini Hedenström, Anders 1998-01-01 application/pdf https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64126 eng eng The Arctic Institute of North America https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64126/48061 https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64126 ARCTIC; Vol. 51 No. 3 (1998): September: 201–300; 283-285 1923-1245 0004-0843 flight speed optical range finder wind response Rhodostethia rosea Larus sabini vitesse de vol télémètre optique réaction au vent info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion research-article 1998 ftunivcalgaryojs 2025-05-27T03:29:43Z I report here for the first time measured flight speeds of Ross's and Sabine's gulls, obtained by optical range finder on the northeast Taymyr peninsula, Siberia. For two flocks of Ross's gulls, airspeeds were 12.2 m/s and 14.6 m/s. Mean airspeed for the Sabine's gulls was 13.9 m/s (SD=3.4 m/s. N=6). A comparison of these measured airspeeds with characteristic speeds predicted from aerodynamic theory showed that the Sabine's gulls were flying significantly faster than predicted minimum power speed, but their speed was not significantly different from maximum range speed. Sabine's gulls adjusted the airspeed in relation to head- and tailwinds, which is in agreement with aerodynamic theory. Je rapporte ici pour la première fois les mesures de vitesse de vol de la mouette rosée et de la mouette de Sabine, prises au télémètre optique dans la presqu'île de Taïmyr en Sibérie. Pour deux volées de mouettes rosées, la vitesse dynamique était de 12,2 m/s et de 14,6 m/s. La vitesse moyenne pour les mouettes de Sabine était de 13,9 m/s (écart-type = 3,4 m/s, N = 6). Une comparaison de ces mesures de vitesse de vol avec les vitesses caractéristiques prédites d'après la théorie aérodynamique montrait que les mouettes de Sabine volaient bien plus vite que la vitesse minimum prédite, mais que cette vitesse n'était pas très différente de la gamme maximum de vitesses. Les mouettes de Sabine ajustaient leur vitesse de vol en fonction des vents de face ou arrière, ce qui correspond à la théorie aérodynamique. Article in Journal/Newspaper Arctic Larus sabini Sabine's Gull Taymyr Taymyr Peninsula Siberia Unknown Taymyr ENVELOPE(89.987,89.987,68.219,68.219) ARCTIC 51 3
spellingShingle flight speed
optical range finder
wind response
Rhodostethia rosea
Larus sabini
vitesse de vol
télémètre optique
réaction au vent
Hedenström, Anders
Flight Speed of Ross's Gull, Rhodostethia rosea, and Sabine's Gull, Larus sabini
title Flight Speed of Ross's Gull, Rhodostethia rosea, and Sabine's Gull, Larus sabini
title_full Flight Speed of Ross's Gull, Rhodostethia rosea, and Sabine's Gull, Larus sabini
title_fullStr Flight Speed of Ross's Gull, Rhodostethia rosea, and Sabine's Gull, Larus sabini
title_full_unstemmed Flight Speed of Ross's Gull, Rhodostethia rosea, and Sabine's Gull, Larus sabini
title_short Flight Speed of Ross's Gull, Rhodostethia rosea, and Sabine's Gull, Larus sabini
title_sort flight speed of ross's gull, rhodostethia rosea, and sabine's gull, larus sabini
topic flight speed
optical range finder
wind response
Rhodostethia rosea
Larus sabini
vitesse de vol
télémètre optique
réaction au vent
topic_facet flight speed
optical range finder
wind response
Rhodostethia rosea
Larus sabini
vitesse de vol
télémètre optique
réaction au vent
url https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64126