Late night gas furnace

[logoschoen]

Just last year i had a no heat call on a house with two 90% furnaces. Both furances side by side, and both flues came out of the house side by side. turn one on, and something sounds like its being chopped to pieces by the inducer motor, pull it apart... its a bird. Turn on the second one, sounds the same, pull it apart.... another bird. It happens all the time in Missouri!