Hello, I just got my first batch of ducklings last wed. When I got them they had some brown is marks along their "toes" that almost looked like a scab? Now the webbing between their toes is turning red and you can see the veins running through it? Im not sure if this is normal or if there's something wrong with my new babies!?! I'm keeping them in a long rubbermaid "brooder" with heat lamp on one end and water and food on the other. Also using aspen shavings which i add more to their bed area about 2 to 3 times a day. Help!