Search USGS⌕ Search

Geology topics

R. B. Clapp

Publications and source records attributed to R. B. Clapp.

At least 91 records · Page 5Linked to original sources
USGS1975

Birds imported into the United States in 1972

Birds imported into the United States in 1972 are tabulated by species. Total numbers for the period 1968-72 are given for the more commonly imported taxa. The number of birds imported in 1972 (640,995) decreased by about one third from that of 1971, largely as a result of a ban declared on the importation of birds in August 1972 due to the outbreak of exotic Newcastle,disease. Much of the decrease in numbers imported was a result of a large decrease in the numbers of parrots imported. In 1972 parrots accounted for under 9% of all birds imported, compared with nearly 25% of all imports the previous year. In 1972, 624 species were imported of which 105 had not been reported in the previous 4 years; since 1968, approximately 1,540 species have been imported. Birds were imported from 53 countries; 10 countries provided nearly 95% of the individual birds. The proportion of presumably wild-caught birds increased to about 86% compared with about 77% in 1971.

Special Scientific Report - Wildlife↗