I have only a small flock -- never more than 4 of identical looking birds. But I want to be able to tell one bird from another -- even when the birds look identical. I really don't feel comfortable putting metal wing bands on, or any leg bands that require pliers. I am more leaning towards plastic bands that are easy to put on, but won't come off. And because I have two sets of for identical looking birds, I need more than just one color bands. What is the best kind of bands to get for this job? And where is the best place to get them? Have YOU ever used them? If you have, please share your experiences with them with me. Thank you in advance.