Alfred Trunk/ BIA / Common Merganser (Mergus merganser) mother carrying chick, Upper Austria, Austria

Alfred Trunk/ BIA / European Ground Squirrel (Spermophilus citellus) carrying nesting material, Austria

Alfred Trunk/ BIA / Alpine Ibex (Capra ibex) males fighting, Austria

Alfred Trunk/ BIA / Alpine Ibex (Capra ibex) males, Austria

Alfred Trunk/ BIA / Wasp (Vespidae) group at nest showing adults and larvae, Austria

Alfred Trunk/ BIA / European Pond Turtle (Emys orbicularis) female, Austria

Alfred Trunk/ BIA / Common Frog (Rana temporaria) pair in amplexus on snow, Austria

Alfred Trunk/ BIA / European Ground Squirrel (Spermophilus citellus) mother and young playing, Austria

Alfred Trunk/ BIA / Canada Goose (Branta canadensis) pair on nest, Sweden

Alfred Trunk/ BIA / Western Capercaillie (Tetrao urogallus) male displaying in mountains, Upper Austria, Austria

Alfred Trunk/ BIA / Little Bittern (Ixobrychus minutus) male, Lake Prespa, Greece

Alfred Trunk/ BIA / Common Merganser (Mergus merganser) female, Upper Austria, Austria

Alfred Trunk/ BIA / Coot (Fulica atra) parent foraging with chick, Austria

Alfred Trunk/ BIA / Alpine Ibex (Capra ibex) male climbing on sheer cliff, Austria

Alfred Trunk/ BIA / Alpine Salamander (Salamandra atra), Austria

Alfred Trunk/ BIA / Horned Grebe (Podiceps auritus) in defensive posture, Sweden

Alfred Trunk/ BIA / Little Bittern (Ixobrychus minutus) juvenile, Austria