banshee

Kitty likes to look out the living room window. He climbs up on our desks and paws the vertical blinds open and slips his body against the glass. He meows while he looks outside, but then he climbs down off the desks and howls like a banshee. I say, "Kitty!" or grab him and he calms down for a sec but then it's back to the howls. I don't understand what he's feeling. Loss?