I believe the hood on falcon's head stands for a period of rest, the lady in the 9 of Pentacles is enjoying herself at that moment but she is skillful in what she does, she is pretty much like the falcon but "hooded" by her garden.
So, if this card we have a paradise bird (still a luxury) probably it modifies a little bit the meaning of this card, it adds enjoyment of beauty to the rest taken at the garden.
Please notice that this card doesn't show the snail seen in RWS decks, that snail is a potential prey for the falcon, in Hanson Roberts we are in a snail-free garden, no need for a hunting bird.