Results 61 to 70 of about 39,040 (293)

The presence of air sac nematodes in passerines and near-passerines in southern Germany

open access: yesInternational Journal for Parasitology: Parasites and Wildlife, 2023
Major climatic changes in conjunction with animal movement may be associated with the spread of parasites and their vectors into new populations, with potentially important consequences for population persistence. Parasites can evolve to adapt to unsuitable ecological conditions and take up refuge within new host species, with consequences for the ...
Abdu, Salamatu   +7 more
openaire   +7 more sources

Isolation of microsatellite loci in the Capricorn silvereye, Zosterops lateralis chlorocephalus (Aves : Zosteropidae) [PDF]

open access: yes, 2003
The Capricorn silvereye (Zosterops lateralis chlorocephalus ) is ideally suited to investigating the genetic basis of body size evolution. We have isolated and characterized a set of microsatellite markers for this species.
Altschul   +13 more
core   +2 more sources

Fruit use and fruit processing by euphonias, specialized avian frugivores

open access: yesOikos, EarlyView.
Euphonias (Neotropical passerines in the genera Euphonia and Chlorophonia) form the quintessential example of a specialized avian frugivore, combining a high reliance on fruit as food and the restriction of fruit taxa exploited. To understand their specialization, we explored the integration of fruit morphological and nutritional traits with their ...
Marco A. Pizo   +3 more
wiley   +1 more source

Occurrence and molecular characterisation of respiratory bacterial infections in pet birds: A gender and age-specific analysis

open access: yesJournal of Veterinary and Animal Sciences
The study examined 76 pet bird carcasses at the Department of Veterinary Pathology, CVAS, Mannuthy. The birds were categorised into four major groups: Psittaciformes, Passeriformes, Columbiformes and Galliformes.
C. Udhayakumar   +6 more
doaj   +1 more source

Passeriformes: nest predators and prey in a Neotropical Savannah in Central Brazil

open access: yesZoologia (Curitiba), 2009
The identification of predators of birds' nests, crucial to a better understanding of predator-prey interactions, remains poorly known. Here we provide evidence that birds, and especially passerines, may depredate birds' nests in the Cerrado (Neotropical
Leonardo F. França   +10 more
doaj   +1 more source

Sperm length variation as a predictor of extrapair paternity in passerine birds. [PDF]

open access: yesPLoS ONE, 2010
The rate of extrapair paternity is a commonly used index for the risk of sperm competition in birds, but paternity data exist for only a few percent of the approximately 10400 extant species.
Jan T Lifjeld   +4 more
doaj   +1 more source

A critique of avian CHD-based molecular sexing protocols illustrated by a Z-chromosome polymorphism detected in auklets [PDF]

open access: yes, 2001
The sexes of non-ratite birds can be determined routinely by PCR amplification of the CHD-Z and CHD-W genes. CHD -based molecular sexing of four species of auklets revealed the presence of a polymorphism in the Z chromosome.
Burke, T.   +5 more
core   +1 more source

Using a social‐ecological macrosystems framework to understand how human activities alter ecological synchrony

open access: yesPeople and Nature, EarlyView.
Abstract Different aspects of ecological systems, biotic or abiotic, often fluctuate in coordinated patterns over space and time. Such high concordance between ecological processes is often referred to as ecological synchrony. Human activities, including and beyond climate change, have the potential to alter ecological synchrony by disrupting or ...
Yiluan Song   +9 more
wiley   +1 more source

Provenance does matter: links between winter trophic segregation and the migratory origins of European robins [PDF]

open access: yes, 2016
Amongst migratory species, it is common to find individuals from different populations or geographical origins sharing staging or wintering areas.
Bearhop, Stuart,   +7 more
core   +1 more source

From dusk till dawn: ecoacoustic monitoring reveals wind energy impacts on roding Eurasian woodcock Scolopax rusticola

open access: yesWildlife Biology, EarlyView.
Renewable energy is vital for reducing carbon emissions and yet its infrastructure poses challenges to biodiversity. While the impacts of wind power on bats and raptors are well‐studied, the effects on elusive species remain largely unknown. The Eurasian woodcock Scolopax rusticola, a nocturnal forest bird, performs characteristic courtship flights at ...
Jan O. Engler   +6 more
wiley   +1 more source

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