yes I'm having the same issue with my macaw Bigbie, he is toilet trained but this pooping on us is very new, he started by flying to my Partner then pooping, now all of a sudden i'm it. I know they will poop when they wake up or when out flying if he sees a predator he will empty his bowel that's a making themselves lighter in case they need to escape, but this is different, now its changed from my partner to me , we both have a fair equal bond with him we both had him since 2 months but i did the hand feeding as I'm the one with the experience raising macaw, he is 2 yrs. now, I'm thinking its more he is pooping on his favourite person which with us can change by the day,, i do all the training ,feeding cleaning etc. if i didn't i know my partner would be his person he just loves him where i have to work for the bond, which is fine i knew that was a possible outcome when taking him to hand feed, baby's always leave their mother for another. But this is different its like he is marking his person, they cant just pee on us ,like a dog might mark his home or person but i really would like to get to the bottom of this, i cant live under a blanket of shizz forever, obviously i will if i have to but again omg i'm literally covered in shizz today .. someone has to know more about what there thinking. oh ok this is years ago, did you figure out why in that time