On feeding of the mallard Anas platyrhynchos on berries of the blackcurrant Ribes nigrum and the gooseberry Ribes uva-crispa in the Leningrad oblast
Journal: Русский орнитологический журнал @ornis
Article in issue: 1501 т.26, 2017.
Free access
Short address: https://sciup.org/140226608
IDS: 140226608
