Fighting Egyptian geese [Alopochen aegyptiaca] at a pond near Castricum, NL.
Somehow, the (accidental) composition, the colors and the tactile values remind me of a late medieval altarpiece, or a battle scene in a Renaissance painting. Perhaps something like The Battle of Anghiari (1505), a lost painting by Leonardo da Vinci, of which a copy in color may have been painted before it was finished and later a drawing of the central section was made by Peter Paul Rubens.
As for the altar piece reminiscence, something like The Ghent Altarpiece (1432) by Jan van Eyck comes to mind.
This is a copy (1945) of the lower left panel of The Ghent Altarpiece, because the original panel also is lost.