@Chlidonias One of the supposed Blue and Gold Macaws with the greenish head looks like a hybrid - probably a “Miligold” Macaw. Here is a closer image of it from their social media: Log into Facebook | Facebook
@WhistlingKite24 thanks, I forgot to check on that. There were actually three like that (the one on the far right is one as well), as well as two Blue and Golds, and at the time I was thinking for some reason that juveniles had much more green on them than adults (i.e. that it was a pair plus their offspring), but then I didn't remember to check if that was correct before uploading the photo!
