When a lorikeet is driven off food by a more dominant bird, it will sometimes perch above the feeding lorikeet and defæcate.
Similarly, when barking as a group in a tree at a perceived threat near their food source below, some will sometimes position themselves above the offending human so as to deliver fæces in his direction.
And again, when a lorikeet has waited for other birds to finish eating, only to find the food bowl empty, the hungry bird will sometimes defæcate in the empty food bowl.