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The breeding bird atlas of Montgomery County, Maryland, USA

Acta Ornithologica

Proceedings of the fourth meeting of the International Bird Census Committee and second meeting of the European Ornithological Atlas Committee / editors, J. Pinowski and K. Williamson, held 1972, Warsaw, Poland
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Abstract

A two-year Breeding Bird Atlas program for Montgomery County was undertaken by the Maryland Ornithological Society in 1971-1972. The county was divided into 65 5 km blocks and each block was assigned to an observer. Preliminary results show 46 to 93 species (mean 66) recorded per 5 km block and from 10 to 52 species (mean 28) confirmed per block. When the data are combined into 10 km block, the number of species recorded ranges from 74 to 97 (mean 88) and the number of confirmed species ranges from 36 to 62 (mean 49). The organizers underestimated the amount of time that would be required for sufficient coverage, and they plan to extend coverage for a third year in order to provide a much firmer basis for future comparisons. Specific suggestions for improving coverage are listed. The advantages of using as small a grid as possible are stressed, and it is recommended that in future Atlas projects each assigned block be subdivided into quarters for more detailed mapping, and especially to enable future changes in bird distribution to be detected more readily.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
The breeding bird atlas of Montgomery County, Maryland, USA
Series title:
Acta Ornithologica
Volume
14
Issue:
37
Year Published:
1974
Language:
English
Contributing office(s):
Patuxent Wildlife Research Center
Description:
446-458
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Acta Ornithologica
First page:
446
Last page:
458
Number of Pages:
13