Observations on birds of the Bulgarian seaboard, with new breeding records for S. W. Bulgaria of Masked Shrike (Lanius nubicus), Bonelli´s Warbler (Phylloscopus bonelli), and Blue Rock Thush (Monticolo solitaries)
Published in Bonner Zoologische Beiträge, in 1980, in volume 31, pages 20-37
Date published:1980