Articles by author: Andrey Ralev

[2] (reverse chronological order)

Vagrant species of birds captured at Durankulak ringing camp, NE Bulgaria, 2019–2020
Volume 42: 89–94 · 20 August 2021

— Views: 2416 · Citations: 3

Recent changes in the presence status and numbers of ruddy shelduck (Tadorna ferruginea) in the Eastern Balkans
Volume 41: 41–49 · 9 April 2020

— Views: 1768 · Citations: 4