Results 91 to 100 of about 39,040 (293)

Evidence of northward range expansion: new record of Curruca melanocephala (Gmelin, 1789) (Passeriformes, Sylviidae) in Serbia [PDF]

open access: yesCheck List
The Sardinian Warbler, Curruca melanocephala (Gmelin, 1789), a typically Mediterranean species, is only occasionally recorded in continental parts of the Balkans. This note presents the fourth national record and the earliest seasonal observation of this
Marko Lj. Nikolić
doaj   +3 more sources

Does a passerine hibernate? [PDF]

open access: yes, 2019
ABSTRACTThe thermal physiology of the highly endangered Rock Wren (Xenicus gilviventris) from New Zealand is examined. It is a member of the Acanthisittidae, a family unique to New Zealand. This family, derived from Gondwana, is thought to be the sister taxon to all other passerines.
McNab, Brian K., Weston, Kerry
openaire   +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

Domination Versus Sisterhoods in the Blood Microbiota of Migrating Birds: Patterns of Within‐ and Between‐Individual Blood Parasite Diversity Revealed Through Metabarcoding

open access: yesIntegrative Zoology, EarlyView.
Avian haemosporidian blood parasites are typically identified through Sanger sequencing of a partial cytochrome b fragment, the MalAvi barcoding region. Next‐generation sequencing is seldom used for avian blood parasite identification; this study demonstrates a higher detection rate of co‐infections via metabarcoding and its possible implications ...
Peter Pibaque   +9 more
wiley   +1 more source

Yearly variation in the structure and diversity of a non-breeding passerine bird community in a Mediterranean wetland

open access: yesAvian Research, 2020
Background The dynamics and structure of many bird communities are changing due to the global warming and changes in the land use and management. The Ebro Valley constitutes one of the chief wintering areas for several passerine species in Iberia, and ...
Juan Arizaga   +7 more
doaj   +1 more source

Between-Year Survival and Rank Transitions in Male Black-Capped Chickadees (\u3cem\u3ePoecile Atricapillus\u3c/em\u3e): A Multistate Modeling Approach [PDF]

open access: yes, 2008
In dominance-structured animal societies, variation in individual fitness is often related to social status. Like many passerine birds, Black-capped Chickadees (Poecile atricapillus) have a short average adult life-expectancy (Ø2 years); however, the ...
Kraus, Cornelia   +5 more
core   +1 more source

The impact of a vertically transmitted microsporidian, Nosema granulosis on the fitness of its Gammarus duebeni host under stressful environmental conditions [PDF]

open access: yes, 2003
Although purely vertically transmitted parasites are predicted to cause low pathogenicity in their hosts, the effects of such parasites on host fitness under stressful environmental conditions have not previously been assessed.
Dunn, A.M., Hatcher, M.J., Kelly, A.
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

Site‐Specific Impacts of Urbanisation on Annual Survival of a Forest Bird

open access: yesEcology and Evolution
Habitat changes associated with urbanization have major and complex effects on wildlife. In birds, urban populations often have lower reproductive success but are able to maintain similar or higher densities than non‐urban populations.
Boglárka Bukor   +6 more
doaj   +1 more source

The impact of conservation translocations on vector-borne parasites : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Ecology at Massey University, Palmerston North, New Zealand [PDF]

open access: yes, 2015
Wildlife conservation in New Zealand relies on translocations of endangered species to safe sites. While knowledge of the biology and behaviour of translocated hosts has steadily increased, the role of parasites in wildlife translocations has been ...
Schoener, Ellen Renate
core  

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