Results 61 to 70 of about 47,339 (326)
De-novo emergence of SINE retroposons during the early evolution of passerine birds
Mobile DNA, 2017 Passeriformes (“perching birds” or passerines) make up more than half of all extant bird species. The genome of the zebra finch, a passerine model organism for vocal learning, was noted previously to contain thousands of short interspersed elements ...
Alexander Suh +6 more
semanticscholar +1 more source
BRIEF OBSERVATIONS ON THE SEMEN AND SPERMATOZOA OF CERTAIN PASSERINE AND NON-PASSERINE BIRDS [PDF]
Reproduction, 1972 Summary. The semen of some passerine and non-passerine birds was examined. That of passerine birds was thick in consistency and contained relatively few spermatozoa, while that of non-passerine species was more liquid in nature with many spermatozoa.
openaire +2 more sources
Classifying avian drinking behaviour: ecological insights and implications in a changing world
Biological Reviews, EarlyView.ABSTRACT Water is a fundamental currency of life, and its availability significantly influences animal behaviour, physiology and distributions. However, our knowledge around the dependence on water for drinking and the direct and indirect mechanisms driving related behaviours remains partial in the context of changing climates. Here, we review patterns
Shannon R. Conradie, Marc T. Freeman
wiley +1 more source
Increase of an introduced bird competitor in old-growth forest associated with restoration [PDF]
, 2012 Many successful invasions involve long initial periods in which the invader exists at low densities followed by sudden population increases. The reasons for such time-lags remain poorly understood.
Cann, Rebecca L., Freed, Leonard A.
core +2 more sources
The extension of the taxon cycle model to island plants: insights from the Canarian vascular flora
Biological Reviews, EarlyView.ABSTRACT Taxon cycle models describe eco‐evolutionary patterns of lineage colonization, diversification, and decline across archipelagos, inferring an important role for competition amongst ecologically similar taxa in driving concurrent niche changes.
José María Fernández‐Palacios +2 more
wiley +1 more source
DiversityHost range expansions are an important factor for shaping the community of associated symbiotic organisms. Birds, as a highly mobile group of animals, are of particular interest to study with respect to the diversity and the distribution of the organisms
Nevena Kolarova +4 more
doaj +1 more source
Avian Conservation and Ecology, 2018 The Worm-eating Warbler (Helmitheros vermivorum) is typically described as a mature forest species requiring moderate to steep slopes and dense understory vegetation for breeding. However, nesting microhabitat characteristics vary regionally.
Patrick J. Ruhl +6 more
doaj +1 more source
Feather growth rate and mass in nearctic passerines with variablemigratory behavior and molt pattern [PDF]
, 2012 Bird species vary greatly in the duration of their annual complete feather molt. However, such variation is not well documented in birds from many biogeographic areas, which restricts our understanding of the diversification of molt strategies.
Barta Z. +8 more
core +2 more sources
Parasitology Research, 2016 The aim of this study was to assess the importance of forest passerine birds in spreading ixodid ticks infected with rickettsiae of spotted fever group (SFG) in sylvatic habitats in western Poland.
Beata Biernat +4 more
semanticscholar +1 more source
Passerine and Softbill Therapeutics
Veterinary Clinics of North America: Exotic Animal Practice, 2000 Passerines (songbirds) and softbills (toucans and mynahs) are increasingly presented for veterinary care as pet owners and aviculturists recognize that successful medical and surgical treatment can be performed in these often tiny patients. Even with an increasing amount of pharmacokinetic data in birds, the use of extrapolated drug regimens continues ...
openaire +2 more sources