Wall was a master an analyzing British bird droppings, as is evident in this study: “Coots and other birds eating goose- and gull-droppings,” T. Wall, British Birds. Vol. 76, no. 9, 1983, pp. 410-411.
Wall was a master an analyzing British bird droppings, as is evident in this study: “Coots and other birds eating goose- and gull-droppings,” T. Wall, British Birds. Vol. 76, no. 9, 1983, pp. 410-411.