Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Mark E. Deutschlander"'
Publikováno v:
The Wilson Journal of Ornithology. 133
Many passerines regularly use flight calls to communicate during migration. However, flight-calling is inconsistent throughout the day, with a markedly lower degree of calling by free-flying individuals during the early evening hours and with peaks i
My thesis focuses on magnetic orientation in migratory birds, i.e. how they can perceive information from the Earth’s magnetic field and use it for orientation. To examine magnetoreception and the function of the light-dependent magnetic compass in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4f9e079d6577440ff181a4d08e4cadae
https://doi.org/10.1016/b978-0-12-809633-8.90099-2
https://doi.org/10.1016/b978-0-12-809633-8.90099-2
Publikováno v:
The Auk. 133:459-469
Migration is energetically costly, and many passerines prepare for and maintain migration with hyperphagia and increased fuel or fat reserves. During spring migration, as they approach their breeding grounds, passerines may deposit fat in excess of w
Publikováno v:
Journal of Field Ornithology. 85:111-133
Site fidelity to breeding and wintering grounds, and even stopover sites, suggests that passerines are capable of accurate navigation during their annual migrations. Geolocator-based studies are beginning to demonstrate precise population-specific mi
Publikováno v:
Journal of Field Ornithology. 85:91-105
Experimental research on the orientation of migratory songbirds is traditionally conducted using orientation funnels or automatic registration cages that record the directional activity of individual birds on paper or a computer. Most traditionally u
Publikováno v:
The Wilson Journal of Ornithology. 124:467-477
Geographic relocations of migratory passerines have shown that adults can compensate for physical displacements; juveniles on their first migration, however, use an innate clock-and-compass strategy and are unable to compensate for displacement. We e
Autor:
Rachel Muheim, Mark E. Deutschlander
Publikováno v:
Journal of Avian Biology. 40:85-89
Fat reserves influence the orientation of migrating songbirds at ecological barriers, such as expansive water crossings. Upon encountering a body of water, fat migrants usually cross the barrier exhibiting 'forward' migration in a seasonally appropri
Autor:
Robert C. Madden, Bary W. Wilson, Mark E. Deutschlander, Larry E. Anderson, Michael J. Freake, John B. Phillips, S.Christopher Borland
Publikováno v:
Animal Behaviour. 65:779-786
Magnetic orientation in mammals has been demonstrated convincingly in only two genera of subterranean mole-rats ( Spalax and Cryptomys sp.) by examining the directional placement of nests in radially symmetrical indoor arenas. Mole-rats show a sponta
Publikováno v:
Journal of Experimental Biology. 204:2401-2413
SUMMARY Ultraviolet visual sensitivity appears to be reduced and, possibly, lost during smoltification in anadromous populations of salmonid fishes. Similar changes occur in non-anadromous salmonids over a mass range that is associated with smoltific
Publikováno v:
Journal of Experimental Biology. 204:2543-2552
SUMMARYTheoretical models implicating specialized photoreceptors in the detection of the geomagnetic field have been the impetus for studying the effects of light on magnetic compass orientation. Magnetic orientation in flies, amphibians and birds ha