NORTHERN HAWK OWLS MOVE SOUTHWARD IN SEARCH OF PREY IN YEARS OF LOW VOLE NUMBERS OR ADVERSE SNOW CONDITIONS ON THEIR NORTHERN BREEDING GROUNDS. INDIVIDUALS OFTEN SET UP HUNTING TERRITORIES WHERE THEY WILL REMAIN FOR DAYS OR WEEKS AS LONG AS SUITABLE PREY IS AVAILABLE. BEING PRIMARILY DIURNAL THEY ARE RELATIVELY EASY TO FIND UNDER THESE CIRCUMSTANCES AND CAN BE REMARKABLY CONFIDING.