Datasets / The current status and future of the Alaska trumpeter swan population


The current status and future of the Alaska trumpeter swan population

Published By US Fish and Wildlife Service, Department of the Interior

Issued over 9 years ago

US
beta

Summary

Type of release
a one-off release of a single dataset

Data Licence
Not Applicable

Content Licence
Creative Commons CCZero

Verification
automatically awarded

Description

An extensive aerial survey of trumpeter swans in Alaska in 1975 disclosed a total of 4,170 birds. An adjusted comparison with a somewhat less complete survey in 1968 indicates a 24 increase or a compounded annual increase of 3.1 Changes in land status and economic activity may limit continuing increase. An extensive aerial survey of trumpeter swans in Alaska in 1975 disclosed a total of 4,170 birds. An adjusted comparison with a somewhat less complete survey in 1968 indicates a 24 increase or a compounded annual increase of 3.1. Changes in land status and economic activity may limit continuing increase.