Record Search Query: [Science_Parameters: Science_Category='EARTH SCIENCE', Science_Topic='HUMAN DIMENSIONS', Science_Term='LAND USE/LAND COVER']
Entry ID: GeoMOOSE
Abstract: This dataset presents Raven (Corvus corax) survey data carried out for over two
years at a supermarket parking lot (app. 300m*600m), strip mall, in Fairbanks,
interior Alaska app. 120 miles south of the arctic circle. Data were collected
bi-weekly, or with a higher frequency, on Sundays or Saturdays between 8 AM and
11 AM by driving on the parking lot for 15 minutes; ... detectability is believed
to be 100 %. This results into unbiased surveys providing a snap shot in time.
Other opportunistic surveys were included as well, e.g. collected during the
week or from locations nearby. The parking lot represents a typical situation
of Ravens in an urban habitat. Ravens were scanned for bands and marks, but
none were found. Moult and age were also noted. Basic Raven behaviour is also
reported, as well as state of the parking lot in regards to parked trucks and
cars, food items, garbage, fast food left-overs, snow and climate. All other
bird species were recorded as well, e.g. common gulls (Larus canus) in summer
(almost no other species were seen). Bird abundance seems to be driven by food
items on the parking lot, e.g. provided by an adjacent fast food restaurant
and by left-overs from parties at the parking lot from the previous night. The
numbers of Ravens at this study site are relatively small (app. 15 birds in
winter and none in summer) and consistent patterns are shown. It is believed
that the described situation applies to many other supermarket parking lots in
the vicinity as well. It is suggested that these 2 years of data are unique and
represent baseline information relevant for Ravens in the interior of Alaska;
they are a simple but powerful snapshot in time and when put into an overall
ISO Topic Category
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Heinrich, B. Ravens in winter. Vintage Publishers, 400 pages.
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