Geology topics
J. M. Scott
Publications and source records attributed to J. M. Scott.
Records of small white egrets in Hawaii and Samoa with notes on identification
No abstract available.
Distance estimation as a variable in estimating bird numbers from vocalizations
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Length of count period as a possible source of bias in estimating bird densities
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Analysis of bird survey data using a modification of Emlen's method
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Reducing bird count variability by training observers
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A variable circular-plot method for estimated bird numbers
A bird census method is presented that is designed for tall, structurally complex vegetation types, and rugged terrain. With this method the observer counts all birds seen or heard around a station, and estimates the horizontal distance from the station to each bird. Count periods at stations vary according to the avian community and structural complexity of the vegetation. The density of each species is determined by inspecting a histogram of the number of individuals per unit area in concentric bands of predetermined widths about the stations, choosing the band (with outside radius x) where the density begins to decline, and summing the number of individuals counted within the circle of radius x and dividing by the area (Bx2). Although all observations beyond radius x are rejected with this procedure, coefficients of maximum distance.
Cavity nesting of the Akepa on the island of Hawaii
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Records of nests, eggs, nestlings, and cavity nesting of endemic passerine birds in Hawaii
No abstract available.
Letter to the editor: Correction to Hawaii creeper article by Sakai and Ralph
No abstract available.
Estimating population densities from variable circular plot surveys
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