I recently adopted a White Capped Pionus about a week ago from a rescue. He seems very comfortable in his new home. Whenever I have him out though he flys over to my bed and will start rubbing his vent on my blanket. I will remove him from the bed but he will fly back minutes later. He also does not do it in his cage only on my bed. Is there a reason why he does this and how do I discourage it.