Results 21 to 30 of about 1,701,221 (334)

Breeding bird populations of Irish peatlands : capsule peatlands are very important habitats for birds despite low species diversity [PDF]

open access: yes, 2008
Aims to describe the variation in breeding bird populations that occur on different types of Irish peatlands and their associated habitat characteristics.
Bracken, Fintan   +2 more
core   +1 more source

When the seasons don't fit: speedy molt as a routine carry-over cost of reproduction. [PDF]

open access: yesPLoS ONE, 2013
The failure of animals to fit all life-cycle stages into an annual cycle could reduce the chances of successful breeding. In some cases, non-optimal strategies will be adopted in order to maintain the life-cycle within the scope of one year.
Maurine W Dietz   +2 more
doaj   +1 more source

Evaluation of the genome in bird breeding

open access: yesVavilov Journal of Genetics and Breeding, 2017
New technologies determining the DNA sequence of nucleotides have led to the discovery of hundreds of thousands of mononucleotide polymorphic markers, some of which are associated with breeding quality of animals. Developed on the basis of these achievements, genomic selection has produced a revolutionary shift in the poultry industry.
A. F. Yakovlev, N. V. Dement’eva
openaire   +3 more sources

Forecasting biodiversity in breeding birds using best practices

open access: yesbioRxiv, 2017
Biodiversity forecasts are important for conservation, management, and evaluating how well current models characterize natural systems. While the number of forecasts for biodiversity is increasing, there is little information available on how well these ...
David J. Harris   +2 more
semanticscholar   +1 more source

Modulation of the hypothalamic-pituitary-adrenal axis of an Arctic-breeding polygynandrous songbird, the Smith's longspur, Calcarius pictus [PDF]

open access: yes, 2003
To successfully reproduce in the Arctic, birds must modulate their neuroendocrine and behavioural systems. These adjustments include an attenuation of the stress responsiveness of the hypothalamic-pituitary-adrenal (HPA) axis to external stimuli and a ...
Wingfield, John C   +3 more
core   +1 more source

Elevational range and timing of breeding in the birds of Ladakh: the effects of body mass, status and diet [PDF]

open access: yes, 2009
We studied the effects of body mass, status (resident or migratory) and diet on the breeding elevation range and timing of reproduction of the birds in the Trans-Himalayan region of Ladakh, northwestern India.
Yoram, Y.T., Namgail, T.
core   +1 more source

Effects of set-aside management on birds breeding in lowland Ireland [PDF]

open access: yes, 2006
Farmland birds have suffered a severe decline in recent years throughout Europe including Ireland. Agricultural intensification is believed to be the main cause and this has led to the introduction of agri-environmental schemes, of which set-aside is a ...
Bracken, Fintan, Bolger, Thomas
core   +1 more source

North American Breeding Bird Survey underestimates regional bird richness compared to Breeding Bird Atlases [PDF]

open access: yesEcosphere, 2022
AbstractStandardized data on large‐scale and long‐term patterns of species richness are critical for understanding the consequences of natural and anthropogenic changes in the environment. The North American Breeding Bird Survey (BBS) is one of the largest and most widely used sources of such data, but so far, little is known about the degree to which ...
Roi Ankori‐Karlinsky   +8 more
openaire   +2 more sources

Factors influencing plasticity in the arrival‐breeding interval in a migratory species reacting to climate change

open access: yesEcology and Evolution, 2019
Climate change is profoundly affecting the phenology of many species. In migratory birds, there is evidence for advances in their arrival time at the breeding ground and their timing of breeding, yet empirical studies examining the interdependence ...
Matthew Low   +4 more
doaj   +1 more source

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