Results 91 to 100 of about 310 (151)

Incorporating measurement error and density gradients in distance sampling surveys

open access: yes, 2007
Distance sampling is one of the most commonly used methods for estimating density and abundance. Conventional methods are based on the distances of detected animals from the center of point transects or the center line of line transects.
Marques, Tiago Andre Lamas Oliveira
core  

FarnsworthCharacterizationAutumnNocturnal.pdf

open access: yes
Billions of birds migrate at night over North America each year. However, few studies have described the phenology of these movements, such as magnitudes, directions, and speeds, for more than one migration season and at regional scales.
Hochachka, Wesley M.   +7 more
core  

The Wired Birder: Radar Ornithology

open access: yes, 2023
Larson, David M.
core  

Ecological barrier crossing strategies in small migratory birds depend on wing morphology and plumage color. [PDF]

open access: yesiScience
Dufour P   +16 more
europepmc   +1 more source

FarnsworthCharacterizationAutumnNocturnalFigureS2.pdf

open access: yes
Billions of birds migrate at night over North America each year. However, few studies have described the phenology of these movements, such as magnitudes, directions, and speeds, for more than one migration season and at regional scales.
Hochachka, Wesley M.   +7 more
core  

Drivers of fatal bird collisions in an urban center. [PDF]

open access: yesProc Natl Acad Sci U S A, 2021
Van Doren BM   +9 more
europepmc   +1 more source

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