Results 61 to 70 of about 35,633 (229)

Influences of environmental and biological factors on song complexity in songbirds : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Ecology at Massey University, Auckland, New Zealand [PDF]

open access: yes, 2017
Content removed due to copyright reasons: Hill, S. D., Pawley, M. D. M., Anderson, M. G., & Weihong, J. (2017). Higher song complexity and intruder pressure at dawn in a vocally complex songbird. Emu - Austral Ornithology, 118(2), 147-157.
Hill, Samuel David
core  

Stable Propagation of a Burst Through a One-Dimensional Homogeneous Excitatory Chain Model of Songbird Nucleus HVC [PDF]

open access: yes, 2006
We demonstrate numerically that a brief burst consisting of two to six spikes can propagate in a stable manner through a one-dimensional homogeneous feedforward chain of non-bursting neurons with excitatory synaptic connections.
C. K. Catchpole   +25 more
core   +1 more source

Stable Isotope Analysis as a Tool to Prevent Illicit Wildlife Trade of Songbirds in Brazil

open access: yesAnimal Conservation, EarlyView.
Feather isotopes provide clear differences between wild and captive songbirds in Brazil. Combining multiple isotopes improved classification accuracy and revealed individuals falsely declared as captive‐bred. These results demonstrate the potential of isotope analysis to detect wildlife laundering in the bird trade.
Luiza Brasileiro   +4 more
wiley   +1 more source

Low Occurrence of Acinetobacter baumannii in Gulls and Songbirds [PDF]

open access: yesPolish Journal of Microbiology, 2020
ANDŻELINA ŁOPIŃSKA   +10 more
doaj   +1 more source

The songbirds as an inspiration for Byzantine kratēmata [PDF]

open access: yesMuzikologija
Byzantine kratēmata, widely known as the terrirem, as part of other, broader musical works, date approximately back to the eleventh-twelfth century. A small group of four kratēmata are named after birds (Aēdhon - Luscinia megarhynchos, Potamis -
Apostolopoulos Thomas
doaj   +1 more source

The Effects of Owl Decoys and Non-threatening Objects on Bird Feeding Behavior [PDF]

open access: yes, 2012
As traditional agricultural practices change, the scarecrow has also been renovated and modernized to include mock natural predators, such as owls, hawks, and falcons instead of comical human representations.
Rensel, Leah J, Wilder, Jannell D.
core   +1 more source

Sexually size dimorphic brains and song complexity in passerine birds [PDF]

open access: yes, 2004
Neural correlates of bird song involve the volume of particular song nuclei in the brain that govern song development, production, and perception. Intra- and interspecific variation in the volume of these song nuclei are associated with overall brain ...
Eens, Marcel   +3 more
core   +2 more sources

The collective application of shorebird tracking data to conservation

open access: yesConservation Biology, EarlyView.
Abstract Addressing urgent conservation issues, such as the drastic declines of North American migratory birds, requires creative, evidence‐based, efficient, and collaborative approaches. The abundance of over 50% of monitored North American shorebird populations has declined by over 50% since 1980. To address these declines, we developed a partnership
Autumn‐Lynn Harrison   +71 more
wiley   +1 more source

Urbanization and brood parasitism affect growth, but not free amino acid concentrations in nestling song sparrows (Melospiza melodia)

open access: yesFrontiers in Bird Science
Urbanization is projected to grow rapidly in the coming decades. Several consequences of this form of anthropogenic change for ecosystems and individuals are described by the fields of urban ecology and urban ecophysiology, respectively.
Isaac J. VanDiest   +3 more
doaj   +1 more source

Differential reliance on aquatic prey subsidies influences mercury exposure in riparian arachnids and songbirds

open access: yesEcology and Evolution, 2021
Cross‐ecosystem subsidies move substantial amounts of nutrients between ecosystems. Emergent aquatic insects are a particularly important prey source for riparian songbirds but may also move aquatic contaminants, such as mercury (Hg), to riparian food ...
Allyson K. Jackson   +2 more
doaj   +1 more source

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