Mass appearance in 2021 of great egrets Casmerodius albus in the post-breeding period in the vicinity of Kovkinitsy (Lodeynopolsky raion, Leningrad oblast)
Journal: Русский орнитологический журнал @ornis
Article in issue: 2179 т.31, 2022.
Free access
Short address: https://sciup.org/140293387
IDS: 140293387
