Hi, new to BYC, but have used the site for info for a while now. We just hatched our first batch of chicks (19 of 20 hatched). The last one that hatched today has 4 legs (one extra coming out the back and one extra coming out the belly). In attached pics, the chick is about 4 hours old. We're just thinking to let nature run its course, but thought it would be interesting to share with the forum. Anyone with advice, please feel free. On a separate but related note, what is the proper / humane way to euthanize a chick?