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WatchList
Species Account for Surfbird (Aphriza virgata)
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| Photo: © Larry Master, NatureServe |
The Surfbird breeds above tree-line in
the interior mountains of Alaska and the Yukon Territory,
up to an elevation of 1,800 m. In this range it is widespread
but sparsely distributed in dry, often rocky alpine tundra
characterized by lichens and dwarf shrubs, with occasionally
mosses or sedges a component of its habitats; much of the
details of its summer range is not well known. Outside the
breeding season this highly migratory species is hardly ever
seen inland. In winterit is found on rocky coastal shores
from south-central and southeastern Alaska all the way to
Chile, a distance of some 17,500 kilometers, the longest and
narrowest distribution of any wintering North American species.
During breeding it feeds mostly on insects and in winter on
intertidal invertebrates, including various mollusks.
One estimate of world population sets the
numbers on the order of 100,000. Its breeding habitat seems
secure as much is on public lands dedicated to conservation,
such as large national parks and wilderness areas. In winter
however it frequents habitats subject to oil spills and areas
where coastal development is taking place. An effort to identify
important wintering sites and stopovers during migration would
help its conservation, along with an effective monitoring
scheme to assess more accurately the status of its numbers.
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