Breeding population of the Black-necked Grebe (Podiceps nigricollis) in southern Bohemia in 1997?2004 and possible causes of changes in numbers.

Abstract

Breeding population of Black-necked Grebe fluctuated between 66-148 pairs in 1997-2004.

Keywords

• Black-necked Grebe
• population size
• population trends
• fishpond management