MS, CSs of many tree swallows perched in leafless tree, FOLLOW SHOTS of them catching insects on surface of lake (1:27). MS, CSs of grey heron working on its nest in dead tree in Lac Georges (non-officiel name), a smaller heron is perched on a nearby branch (1:19). FOLLOW MS of muskrat crossing lake, with swallows flying by (0:59). MWS of lake in early spring, ZOOM IN to MSs tree swallows catching insects on surface of lake (2:55). CS of red-breasted grosbeak perched in tree, it takes off (0:08). CS of green plant with small yellow flowers (0:05).