Birds imported into the United States 1971 are tabulated by species. Total numbers for the period 1968-1971 are given for the more commonly imported taxa. The number of birds imported in 1971 increased only slightly over that for 1970. In 1971, 750 species were imported, of which 194 had not been imported in the previous 3 years; since 1968, approximately 1,445 species have been imported. Parrots accounted for nearly 25% of all birds imported in 1971, compared to only 13.5% in 1970. Birds were imported from 63 foreign countries. The proportion of imported birds presumed to have been raised in captivity decreased in 1971.Research supported by the U.S. Fish and Wildlife Service, and peformed by the Bird and Mammal Laboratories, Division of Wi...
These data were obtained by digitizing data from U.S. government reports on releases of foreign game...
Nos. [1]-[3] and [5] are U.S. Division of biological survey, Bulletins no. 18, 26, 35 and 45; no. [4...
The early history of the introduction of foreign birds into this country is mostly clothed in darkne...
Mammals imported into the United States in 1971 are tabulated by species and country of origin. Tota...
The average number of birds per route is tabulated by State, along with the total number of each spe...
Summarizes population changes of 222 bird species reported on >50 permanent breeding bird survey rou...
State Foreign Game Investigation Program reports covering the success of trial liberations from 1960...
The number of each species of mammal reported on Form 3-177 for importation into the United States i...
Parrots are one of the most species-rich groups of birds of which the majority inhabits tropical and...
<p>Number of Species of live birds in international trade in China from 1981 to 2010.</p
Parrots have been transported around the world since the 1400s and about 44 species have established...
Migratory birds, which move across State and National borders, are recognized as an international re...
The importation of live birds, mammals, reptiles, fish and amphibians into the United States is a gr...
As people have spread around the world, they have taken with them a broad range of other species to ...
The aim of this study was to assess trends in captive breeding of threatened and endangered bird spe...
These data were obtained by digitizing data from U.S. government reports on releases of foreign game...
Nos. [1]-[3] and [5] are U.S. Division of biological survey, Bulletins no. 18, 26, 35 and 45; no. [4...
The early history of the introduction of foreign birds into this country is mostly clothed in darkne...
Mammals imported into the United States in 1971 are tabulated by species and country of origin. Tota...
The average number of birds per route is tabulated by State, along with the total number of each spe...
Summarizes population changes of 222 bird species reported on >50 permanent breeding bird survey rou...
State Foreign Game Investigation Program reports covering the success of trial liberations from 1960...
The number of each species of mammal reported on Form 3-177 for importation into the United States i...
Parrots are one of the most species-rich groups of birds of which the majority inhabits tropical and...
<p>Number of Species of live birds in international trade in China from 1981 to 2010.</p
Parrots have been transported around the world since the 1400s and about 44 species have established...
Migratory birds, which move across State and National borders, are recognized as an international re...
The importation of live birds, mammals, reptiles, fish and amphibians into the United States is a gr...
As people have spread around the world, they have taken with them a broad range of other species to ...
The aim of this study was to assess trends in captive breeding of threatened and endangered bird spe...
These data were obtained by digitizing data from U.S. government reports on releases of foreign game...
Nos. [1]-[3] and [5] are U.S. Division of biological survey, Bulletins no. 18, 26, 35 and 45; no. [4...
The early history of the introduction of foreign birds into this country is mostly clothed in darkne...