Phloem sap in fire-damaged Scots pine trees provides instant foraging opportunities for Three-toed Woodpeckers Picoides tridactylus - Pakkala, Timo; Kouki, Jari; Piha, Markus; Tiainen, Juha (My University, 2017)
Keywords: nilamahla; mahlan käyttö; kulotus; pohjantikka; mänty