Sentences with phrase «avian predators»
"Avian predators" refers to birds that hunt and eat other animals as their primary source of food. Full definition
«In females, selection seems to have favoured better camouflage to avoid attack from avian predators.
sciencedaily.com
They found that avian predators did indeed pick off a lot of beetles: in the rainy season — peak time for beetle activity — borer infestation almost doubled when birds were excluded from foraging on coffee shrubs, rising from 4.6 % to 8.5 %.
Avian predators most probably procured the much rarer squirrels and gerbils from drier scrub or arid settings at a distance.
The presence of avian predators (gulls and owls) and the impacts of Hurricane Arthur are the suspected cause of poor fledging rates at the site.
[Kate L. A. Marshall, Kate E. Philpot, and Martin Stevens, Microhabitat choice in island lizards enhances camouflage against avian predators]
Marshall and her field assistant and co-author, Kate Philpot, found that on each island individuals showed better color matching against their own chosen rock backgrounds than against other lizards» rock backgrounds, as perceived by avian predators such as the crows and raptors abundant in their study sites.
Common Ravens are now the most pervasive predatory species nesting in this area, accounting for 46 percent of nests among these four avian predator species.
A new study by the Wildlife Conservation Society (WCS), U.S. Geological Survey (USGS) and Idaho State University (ISU) explored how habitat alterations, including the addition of energy transmission towers, affect avian predators nesting in sagebrush landscapes.
In urban areas in particular, cats are one of the most common avian predators (Sims et al. 2008), but their total impact on wildlife is difficult to estimate and varies greatly between studies (Fitzgerald and Turner 2000) and with study methodology (Krauze - Gryz et al. 2012a).
Norrdahl, K. & Korpimäki, E. Do nomadic avian predators synchronize population fluctuations of small mammals?
One student team plans to make dog - obedience signs for the San Diego Humane Society; two others working with the San Diego Oceans Foundation will build a fish pen to protect 11,500 sea bass from avian predators.
New research by Kate Marshall from the University of Cambridge's Department of Zoology and Dr Martin Stevens from the University of Exeter's Centre for Ecology and Conservation, published today in Scientific Reports, shows that individual lizards are able to choose their resting spot wisely and select a rock in their natural environment that will make their backs less conspicuous to avian predators.
Knowing that researchers in the early 20th century had shown that avian predators can wipe out an entire population of cicadas that emerges out of sequence, Koenig decided to take a look at how bird populations might affect the insects» cycles.
Their analysis showed that these birds» populations reached their lowest point the year the insects emerged, which suggests that avian predators aren't exerting as much pressure on the cicadas as scientists thought.
«As with all good studies, this one generates many new questions,» says Staffan Bensch, an animal ecologist at Lund University in Sweden, who wonders whether the virus has benefitted some songbird species by killing off their avian predators, jays and crows.
Our results shed light on how these avian predators might change with them,» said Coates of USGS.