I have noticed recently that two of my older hens, roughly 2 1/2 -3 years old, have some pink coloring between their toes and one has some of the pink coloring up her legs a bit. My roo who also has yellow legs has some pink showing too on his legs. Is this normal? I have never noticed it before and on one of the older Leghorns is is becoming more pronounced. Anything to worry about? Thanks in advance!