I just read that you cannot because ducks don't have a sphincter muscle so they cannot "hold it" until they get to a litter box. The only solution I saw was duck diapers worn with a harness. http://www.flightquarters.com/bird-diapers/category/duck-goose-diapers.html
Erin has two places she uses, when she needs to go 90% of the time she will go there and shit. All bets are off if something scares her, though, as she will shit while flying.
Lol, and i think some birds just enjoy shitting on people Ha ha, you cant fly, im up here, youre not, cop a load of this
blinded by the light or what the hell was that? LOL TY, that is amazing about Erin....so you have trained her pretty well....but crows are one of the smartest birds anyway....
if someone was outside and i walked out of my house to check whats going on... and not having my dog with me... but still holding a shotgun with 3 or 4 ducks behind me.. "WHAT DO YOU WANT" MY DOG IS INSIDE. quack they say, still locked cocked and ready to blow. lol holding shotgun with ducks behind you. lol pitbull in house, ducks and guns. amazing.