Tennessee birds that do n’t migrate long distances must sometimes cope with pantie and irregular winter food supplies. One strategy for coping – the strategy of hoarding – is to collect food while it is plentiful and stash it away for the tend times to come during winter. alleged larder-hoarders store all their food items in one position ( akin to our pantries ) while scatter-hoarders store food in many different places. Red-headed woodpeckers are both. The initial storage of nuts may be in one rate – the pantry. Red-headeds cursorily gain and hide as many nuts as possible before competitors like squirrels, aristocratic jays, baseless turkeys and other woodpeckers get them first. Nut and acorn caches may be concealed in big tree cavities by dampen bark and wood. belated, a red-headed woodpecker may go back to the pantry to move and store the acorns in many different disperse locations. It ‘s safer not to keep all the acorns stored at one web site. A rival could raid it and get the entire hoard. Or the acorns could all rot at once. Acorns may be moved from one crevice to another or even turned over and aired to slow decay. sometimes red-headed woodpeckers break acorns and nuts into small pieces and push them into crevices in wood posts, tree cavities, natural cracks and under bark. They besides store food in gate posts, railroad track ties and under house shingles. They can hammer acorns into crevices so tightly that other animals are unable to remove them. Red-headeds sometimes have a particular invest – an “ anvil ” site like a flat-topped tree stomp – where they take nuts to break them into little pieces for eat and storehouse. Red-headed woodpeckers store acorns and nuts from fall into early winter by carrying one item at a time in the bill. They pull nuts directly from the tree by hanging top down. Once a corner is stripped of nuts, they collect fallen nuts from the grind. Besides acorns and beechnuts red-headed woodpeckers store corn whiskey kernels, pine seeds, grasshoppers and crickets for winter retrieval.
The cold the winter, the more store food is retrieved. Acorns have a long shelf life. With their hard, protective coatings, they can be stored for about a year. Red-headed woodpeckers defend winter territories and guard food memory sites from intruding birds and small mammals. Tennessee ‘s early woodpecker that stores food – the red-bellied stores food by and large in disperse cracks and crevices in trees and posts – does not defend its stored food supply. other Tennessee birds that store food in descent and winter are blue jays, tufted titmouse, white-breasted nuthatches, red-breasted nuthatches, brown creepers, dunce shrikes and american english kestrels. In the western U.S., Lewis ‘ woodpeckers hoard by stuffing acorns into cracks in utility poles and tree bark. western acorn woodpeckers are fanatics when it comes to hoarding. One family chiseled about 50,000 little holes into one corner and gorge every hole with an acorn. Marcia Davis may be reached at 865-330-BIRD ( 2473 ).
I am broadly interested in how human activities influence the ability of wildlife to persist in the modified environments that we create.
Specifically, my research investigates how the configuration and composition of landscapes influence the movement and population dynamics of forest birds. Both natural and human-derived fragmenting of habitat can influence where birds settle, how they access the resources they need to survive and reproduce, and these factors in turn affect population demographics. Most recently, I have been studying the ability of individuals to move through and utilize forested areas which have been modified through timber harvest as they seek out resources for the breeding and postfledging phases. As well I am working in collaboration with Parks Canada scientists to examine in the influence of high density moose populations on forest bird communities in Gros Morne National Park. Many of my projects are conducted in collaboration or consultation with representatives of industry and government agencies, seeking to improve the management and sustainability of natural resource extraction.