منابع مشابه
Red-cockaded Woodpecker Centers On
T he southern pine beetle, Dendroctonus fiontalis (Coleoptera: Scolytidae), and the red-cockaded woodpecker, Picoides borealis, are indigenous species that occur together in pine (Pinus sp.) forests of the southern United States. For different reasons, these organisms have been the focus of considerable research. Interest in the southern pine beetle centers on the role this insect plays as a pe...
متن کاملAnimating the Ivory-billed Woodpecker
The proposed rediscovery of the Ivory-Billed Woodpecker by the Cornell Laboratory of Ornithology, while celebrated by some ornithologists, was debated by others. Central to the argument is the interpretation of a fuzzy video depicting a large black and white bird taking flight. This thesis describes the creation of a physiologically-accurate animation of a flying Ivory-Billed Woodpecker in hope...
متن کاملDistress Calls in the Acorn Woodpecker
Acorn Woodpeckers live in extremely stable kin groups. Nonetheless, only 59.9% of birds caught in roosting aggregations gave distress calls or fear screams. Distress calling was highly repeatable among individuals and apparently heritable. However, the incidence of distress calling did not vary seasonally or according to age, sex, or status. Also, with two marginally significant exceptions, dis...
متن کاملWoodpecker pecking: how woodpeckers avoid brain injury
Woodpeckers are capable of repeated pecking on a tree at remarkably high decelerations (on the order of 10 000m s 2 or 1000 g). In this paper, I re-examine previous studies of pecking and scaling effects in brain injury. I find that there are three keys to woodpeckers’ ability to withstand high decelerations: their small size, which reduces the stress on the brain for a given acceleration; the ...
متن کاملReproductive skew in the polygynandrous acorn woodpecker.
Reproductive skew models, which focus on the degree to which reproduction is shared equally (low skew) or monopolized by a single individual (high skew) within groups, have been heralded as providing a general unifying framework for understanding the factors determining social evolution. Here, we test the ability of optimal skew, or "transactional," models, which predict the level of skew neces...
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ژورنال
عنوان ژورنال: Conservation Biology
سال: 2003
ISSN: 0888-8892,1523-1739
DOI: 10.1046/j.1523-1739.2003.01734.x