Does any one know what could make it do such a thing? My darling silkie hen was sitting on her chicks under the roost and the guinea jumped ontop and was pulling feathers out, scratching the heck out of her and then pulled her over backwards and was pecking at her throat. That momma is such a nice one and for no reason the guinea attacked her. Needless to say I had a pitch fork and that guinea got its @$$ handed to it! It now lives with the ducks and they are giving it the taste of its own medicine.