Fig. 1
From: Hydrology influences breeding time in the white-throated dipper
The advancement in breeding time in the white-throated dipper population in Lyngdalselva. The advancement in hatching date (hatching day-of-year, solid line) in the white-throated dipper population in Lyngdalselva, in Norway. Grey points denote observed annual hatching days and black points the observed annual average hatching date in 1978–2015