Wind-dependent foraging flight in the Osprey Pandion haliaetus
Ornis Svecica, 2006 We studied the foraging technique of Ospreys Pandion haliaetus during different wind speed conditions at Lake Hammarsjön, Sweden in autumn 2003. Different fishing techniques were used with a shift in relation to wind speed: (1) without hovering, (2) hovering with pure flapping flight, (3) hovering with flapping flight and gliding into the wind, and (4)
Roine Strandberg +2 more
openaire +1 more source
Comparing timing and routes of migration based on ring encounters and randomization methods [PDF]
Animal Biodiversity and Conservation, 2004 A method for comparing two migration routes is introduced. In the method are needed approximations of the average daily positions which are computed based on averages of dates and of positions in a window sliding through the encounters ordered in ...
Lokki, H., Saurola, P.
doaj
Bestandsentwicklung ausgewählter Vogelarten in Sachsen-Anhalt von 1990 bis 2000 [PDF]
, 2013 Der Vogelschutz ist bis heute weltweit der Vorreiter im globalen Naturschutz. Die unterschiedlichen Lebensstättenansprüche der einzelnen Arten, von großflächigen biotopübergreifenden Arealen bis hin zu Kleinstlebensräumen, die Bekanntheit der Vögel und ...
Dornbusch, Gunthard
core
Persistent Pollutants in Audouin's Gull (Larus audouinii) in the Western Mediterranean: A Case-study with Wide Implications? [PDF]
, 2008 The possibility of persistent pollutants playing an adverse role in the reproductive success of Audouin's Gull in the western Mediterranean was examined through chemical analyses of 7 eggs of this species that did not hatch.
Bijleveld, M. F. I. J. +2 more
core +2 more sources
La influència de la llengua catalana en els noms d'ocells maltesos: apunts preliminars [PDF]
La influència de la llengua catalana en la llengua maltesa no ha estat gaire estudiada malgrat que l'illa va ser de sobirania catalana durant dos segles.
Alzina Bilbeny, Pere
core
Recompte d’aus aquàtiques hivernants de les Illes Balears. Gener 2014 [PDF]
, 2013 S’han registrat un total de 24.051 aus pertanyents a 57 espècies. El 72 % dels efectius s’han trobat a Mallorca, el 19 % a Menorca i el 7 % a Pitiüses. Es comparen els resultats per illes amb la mitjana dels anys 1991-2013.
Garcia, David +3 more
core
Anàlisi de les causes accidentals de mortalitat de rapinyaires a Mallorca des del 2004 al 2016 [PDF]
[cat] Al present treball s’avaluen les entrades de rapinyaires al COFIB (Consorci per a la Recuperació de la Fauna de les Illes Balears) en el període 2004/2016. Les dades recopilades de tots els rapinyaires ferits o morts durant aquest període
Monserrat, B., Pons, G.X.
core
Differences between stance and foot preference evident in Osprey (Pandion haliaetus) fish holding during movement. [PDF]
Brain Behav, 2018 Allen LL +5 more
europepmc +1 more source