Results 11 to 20 of about 158,409 (311)

Rich pickings near large communal roosts favor 'gang' foraging by juvenile common ravens, Corvus corax. [PDF]

open access: yesPLoS ONE, 2009
Ravens (Corvus corax) feed primarily on rich but ephemeral carcasses of large animals, which are usually defended by territorial pairs of adults. Non-breeding juveniles forage socially and aggregate in communal winter roosts, and these appear to function
Sasha R X Dall, Jonathan Wright
doaj   +1 more source

Evaluation of Spatio-Temporal Patterns of Predation Risk to Forest Grouse Nests in the Central European Mountain Regions

open access: yesAnimals, 2021
We evaluated the spatiotemporal patterns of predation risk on black grouse nests using artificial nests that were monitored by camera traps in mountain areas with a small extant (Ore Mts.) and already extinct (Jeseníky Mts.) black grouse population.
Jan Cukor   +6 more
doaj   +1 more source

Influence of Habitat and Food Resource Availability on Common Raven Nest Site Selection and Reproductive Success in Mediterranean Forests

open access: yesBirds, 2021
Bird nest selection in forests can be influenced by the composition of key structural elements and resources. This has important consequences in terms of species population dynamics since it can determine reproduction success.
Amalia Segura, Pelayo Acevedo
doaj   +1 more source

Critical factors for implementing and diffusing sustainable Product-Service Systems: Insights from innovation studies and companies' experiences [PDF]

open access: yes, 2013
This is the post-print version of the final paper published in Journal for Cleaner Production. The published article is available from the link below. Changes resulting from the publishing process, such as peer review, editing, corrections, structural ...
Ceschin, F
core   +1 more source

Channels’ Confirmation and Predictions’ Confirmation: From the Medical Test to the Raven Paradox [PDF]

open access: yes, 2020
After long arguments between positivism and falsificationism, the verification of universal hypotheses was replaced with the confirmation of uncertain major premises. Unfortunately, Hemple proposed the Raven Paradox.
Lu, Chenguang
core   +3 more sources

Sex-specific parental care during postfledging in common ravens [PDF]

open access: yesAnimal Behaviour, 2021
Data and R script of the analysis used in manuscript 'Sex-specific parental care during post-fledging in common ravens' by Selin Ersoy; Nino Maag; Thibault Boehly; Palmyre H Boucherie; Thomas ...
Ersoy, Selin   +4 more
openaire   +3 more sources

Adult sage‐grouse numbers rise following raven removal or an increase in precipitation

open access: yesWildlife Society Bulletin, 2017
Weather and lethal control of common ravens (Corvus corax; hereafter, ravens) can affect the nesting success of greater sage‐grouse (Centrocercus urophasianus), but implications of these effects in terms of the subsequent size of the breeding population ...
Luke W. Peebles   +2 more
doaj   +1 more source

Detectability of common ravens (Corvus corax) in the eastern USA: Rapid assessment of a recolonizing species

open access: yesEcosphere, 2022
Common ravens (Corvus corax) inhabited much of the eastern United States prior to European colonization but were nearly extirpated by the mid‐1900s. Although remnant raven populations have since begun recolonizing portions of their historic range in the ...
Zachary J. Hackworth   +3 more
doaj   +1 more source

Seed Mass and Morphology in Outcrossing and Selfing Species of Clarkia (Onagraceae): An SEM Study [PDF]

open access: yes, 2004
Seeds from three pairs of outcrossing-selfing sister taxa from the genus Clarkia (farewell-to-spring, Onagraceae)—Clarkia unguiculata, Clarkia exilis, Clarkia xantiana ssp. xantiana and ssp. parviflora, and Clarkia concinna ssp.
Cavaliere, A. R.   +2 more
core   +3 more sources

Novel management tools for subsidized avian predators and a case study in the conservation of a threatened species

open access: yesEcosphere, 2019
Wildlife managers face complex problems in attempting to achieve contemporary conservation goals while maintaining ecosystem function. Anthropogenically altered environments can subsidize certain species, causing them to become overabundant and straining
Timothy Shields   +5 more
doaj   +1 more source

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