ok, on Friday we adopted a bonded pair of greenwing macaws that were rescued by the SPCA from a bad home along with 28 other parrots and exotic birds. we have them in a 4x8 walkin cage and they will let us hand feed them and rarely we can stroke their beaks, but thats as far as touching goes..the SPCA said the girl was in heat and she is indeed very cranky and moody. she will bite at us though not actually grab us, just threaten us, we show no reaction as not to reinforce it. they are slowly gaining trust in us and I have I real worries in that area, we knew what we were getting from the history they had so we weren't expecting shoulder birds, just wanted to give them a home and some tlc. my concern is they just crawl around on walls and top of cage and won't sit on any of the perches, how can we get the, on perches so they are more comfy?