Salix macalliana maybe?
In sedge fen
Leaves glossy dark green adaxially, shiny glabrous abaxially, crenulate with gland tipped teeth. Catkins on leafy branchlets, long narrow ovaries with fine wavy hairs. 1-2 m tall. Reddish brown glabrous stems
Large, black eyes, red spot and black band on yellow beak, yellow feet