I've got 25 pigeons. Usually they all pile into the feed when I feed them. Today only about half fed. The rest stayed on their perches. The last couple of days we've had nothing but snow & rain. No sunlight at all. The loft is draft free. Temperatures at night in the upper 20's-30's. I lost a bird last night. I examined the dead bird everything looked good to me, granted I am new to this pigeons thing. Love it! Is there anything I need to worry about? By the way, I clean the loft every other day. Clean water every day.