When an injured bird was brought into Cordelia’s Bird Rescue Research Center, an X-Ray revealed the head of an alien inside the duck’s stomach.
Results of a necropsy are still awaited, though my guess is that the duck just got sick of the little alien constantly making fun of how it walked and finally snapped, literally.
The alien’s family was not available for comment, but it is speculated that the decapitation will not go well with the alien race and a full blown invasion within the next few days is imminent.