Long-term decline in breeding abundance of Black-headed Gull (Chroicocephalus ridibundus) in the Czech Republic: a case study of a population trend at the Chomoutov lake

by Poprach, Karel, Machar, Ivo, Maton, Karel
Source: 1. Ekológia (Bratislava) 1. Roč. 35, č. 3 (2016), s. 350-358 1. 1335-342X