Results 91 to 100 of about 44,293 (251)

Behavioural responses of a gamebird to human encounters across the hunting season

Wildlife Biology, EarlyView.
We examined the behavioural adaptation of rock ptarmigan Lagopus muta in response to human encounters across the hunting season. We conducted disturbance experiments in two different parts of the species' range, in subarctic (Iceland) and in alpine (Italy) habitats.
Farina Sooth, Ólafur K. Nielsen, Ilse Storch   +2 more
wiley   +1 more source

Dynamics of high-bypass-engine thrust reversal using a variable-pitch fan [PDF]

The test program demonstrated that successful and rapid forward-to reverse-thrust transients can be performed without any significant engine operational limitations for fan blade pitch changes through either feather pitch or flat pitch.
Sagerser, D. R., Schaefer, J. W., Stakolich, E. G.   +2 more
core   +1 more source

Nesting ecology of an ice‐associated seabird, Kittlitz's murrelet, at the northern edge of its range

Wildlife Society Bulletin, EarlyView.
We studied the Kittlitz's murrelet, an ice‐associated seabird of conservation concern, at the northern edge of its range. Over a 2‐year period, we estimated nest density and success at 2 sites, captured and telemetered nesting murrelets, and tested the use of a thermal camera to improve nest detection.
Michelle L. Kissling, Molly C. McDevitt, Jonathan J. Felis, William Crisci, Zachary Pohlen, Ryan Ongtowasruk, Daniel L. Perret, Paul M. Lukacs, James A. Johnson, Metrona Mazonna   +9 more
wiley   +1 more source

Integrating fecal DNA and telemetry to estimate wildlife densities in anthropogenic landscapes

Wildlife Society Bulletin, EarlyView.
Density estimation is central to wildlife management efforts but can be challenging in anthropogenic landscapes due to small parcel sizes, access restrictions, and limited green space. We evaluated (a) the use of a plot‐based spatial capture‐recapture sampling design to estimate deer density in developed landscapes and (b) if integrating telemetry data
Ashley Lynn, Mikiah McGinn, Nathan J. Hostetter, Heather Evans, Christopher E. Moorman, Nils Peterson, John Kilgo, Elizabeth M. Kierepka   +7 more
wiley   +1 more source

Preening correlates with lower feather bacteria abundance but not feather coloration in a lek‐breeding bird

Journal of Avian Biology
Feathers are structures unique to birds that serve important functions such as flight, thermoregulation, and communication. Bacteria that live on the feathers, particularly ones that can break down keratin, have the potential to damage feathers and ...
Melanie R. Florkowski, Kirstin M. DeBlonk, Jessica L. Yorzinski   +2 more
doaj   +1 more source

Nature tables: Discovering Children's interest in natural objects [PDF]

, 2007
Primary school pupils in the UK today may be less familiar with natural objects, less exposed to formal natural history teaching and have less time given to school-based observation and discussion of natural objects. This study of children’s responses to
Tomkins, Stephen, Tunnicliffe, Sue Dale
core   +1 more source

Development of Microsatellite Markers for Ex Situ Management of the Harpy Eagle Using Next Generation Sequencing

Zoo Biology, EarlyView.
ABSTRACT The Harpy Eagle (Harpia harpyja), one of the largest birds of prey in the world, is threatened with extinction throughout its entire area of occurrence in the Neotropics. While conservation efforts for the wild populations are crucial, it is also important to focus on ex situ conservation actions.
Mylena Kaizer, Pedro S. Bittencourt, Érico M. Polo, Tânia M. Sanaiotti, Izeni P. Farias, Lorenzo von Fersen, Tomas Hrbek, Aureo Banhos   +7 more
wiley   +1 more source

Age differences in primary moult of the Black-headed Gull Chroicocephalus ridibundus

The European Zoological Journal
Flight feather moult is an energetically expensive stage of the annual cycle of birds. Its timing is adjusted to other important time- and energy-demanding activities, including migration.
W. Meissner, M. Jewuła
doaj   +1 more source

Relationship between developmental modes, flight styles, and wing morphology in birds

The European Zoological Journal, 2017
The aim of this work is to estimate the relationship between developmental mode and flight style, body mass and wing morphology of birds. We revealed high evolutionary correlation between developmental mode and flight style of birds.
O. V. Shatkovska, M. Ghazali
doaj   +1 more source

Diet, phenology and body size shape nutrient release by songbirds

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Animals can dramatically alter ecosystem structure and function through the cycling and transport of nutrients in their waste. While birds are particularly capable of influencing nutrient cycles due to their high mobility, abundance, metabolism and functional diversity,
Linsey Chen, Alexander S. Flecker, Ethan S. Duvall   +2 more
wiley   +1 more source