Chronic dehydration takes the greatest toll on kidney function. Notice if the eyes are retracted, check the skin on the feet for wrinkling, or separate the feathers and twist the skin. Dehydrated animals will exhibit wrinkles in the skin or slowness in returning to a normal state when twisted. There may be less urine in the droppings, indicating dehydration. A nother side effect of winter is stale air.
Most furnace systems recycle the air in the home over and over.
There are several products of chronic air recycling. Due to the dust levels increasing, it is recommended to have an in aviary air filtering system to remove dust and feather dander. Dusty air can plug avian nostrils and thereby decrease effective respiratory exchange. T he best heating method utilizes fresh outside air for combustion. One of the necessities of proper combustion is oxygen, however most furnaces recycle the air already in the house.