Reference
Nikolas Thum, Hanno Schäfer (2018): Contras ng popula on trends of Whinchat (Saxicola rubetra) and Stonechat (S. rubicola) in fens south of lake Chiemsee (Bavaria, Germany) – WhinCHAT - Digitale Magazine for Whinchat Research and Conservation – 3: 46 - 50.