The Abundance and Distribution of the Bohemian Waxwing Bombycilla garrulus (L.) in Northern Eurasia
摘要
Abstract
The article presents the results of research on the number and distribution of the Bohemian waxwing in the territory of Northern Eurasia within the borders of the Soviet Union in 1990. The work uses materials collected in the period from 1880 to 2022 (intermittently and mainly since 1960) in the first half of summer (during nesting), in winter, and partially throughout the year. The Bohemian waxwing abundance was estimated on the basis of the results of bird counts on routes with a length of about 300 000 km.