Results 11 to 20 of about 74,533 (314)
Intra-tropical movements as a beneficial strategy for Palearctic migratory birds [PDF]
Royal Society Open Science, 2018 Migratory birds often move significantly within their non-breeding range before returning to breed. It remains unresolved under which circumstances individuals relocate, whether movement patterns are consistent between populations and to what degree the ...
Jaroslav Koleček +3 more
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Czech Journal of Animal Science, 2019 The emu (Dromaius novaehollandiae) is considered a versatile farm species whose main by-products are meat and oil. At present, there is lack of information on the value of the meat of laying females at the end of their reproductive cycle which hampers ...
Mateusz Bucław +3 more
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Variation in female reproductive tract morphology across the reproductive cycle in the zebra finch [PDF]
PeerJ, 2020 Background In seasonally breeding birds, the reproductive tract undergoes a dramatic circannual cycle of recrudescence and regression, with oviduct size increasing 5–220 fold from the non-breeding to the breeding state.
Laura L. Hurley +3 more
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When the seasons don't fit: speedy molt as a routine carry-over cost of reproduction. [PDF]
PLoS 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
Vavilov 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
Ecology 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
North American Breeding Bird Survey underestimates regional bird richness compared to Breeding Bird Atlases [PDF]
Ecosphere, 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
Effect of geolocators on migration and subsequent breeding performance of a long-distance passerine migrant. [PDF]
PLoS ONE, 2013 Geolocators are small light-weight data loggers used to track individual migratory routes, and their use has increased exponentially in birds. However, the effects of geolocators on individual performance are still poorly known.
Debora Arlt, Matthew Low, Tomas Pärt
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Insect ectoparasites on wild birds in the Czech Republic during the pre-breeding period
Parasite, 2011 Wild passerine birds (Passeriformes) from the northeastern part of the Czech Republic were examined for ectoparasites during the pre-breeding period in 2007. Two species of fleas of the genera Ceratophyllus and Dasypsyllus (Siphonaptera: Ceratophyllidae),
Sychra O. +4 more
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