I'm a "newbee" and am preparing my coop for arriving chickens this wkend. I want to plant some flowers around the coop. At some point in the future, I'll be adding a larger run area....my question is, are there flowers that would make the birds sick, or ones that if they were to eat them, wouldn't be good for them? I'd just like to put in some hardy, but pretty ones. Thanks for indulging my desire to "make things pretty."