Why Bird Bruises are Green

From Raven Ridge Wildlife Center

WOAH, we admitted a one of a kind Eastern Screech owl... Okay, not really one of a kind... just different looking. This screech owl was found in back of a utility trailer after it hit the trailer ramps head on. He was found lying in the back of the trailer eyes closed and laying on his side, as the finder thought he was dead until started moving his feet. Thank you, Mr. L. Dietz for making the trip from Perry County to get us this little guy!

After a full exam we were able to see there was no serious injuries such as broken wings, legs or any other serious injuries. After a few hours the owl opened his left eye, and it was green? So, why is this owl's eye green you ask?

Mammals have Bilirubin. It is responsible for the yellow color of healing bruises and the yellow discoloration in jaundice.

Avian species have Biliverdin (Latin for green bile), a green tetrapyrrolic bile pigment, and is a product of heme catabolism. It is the pigment responsible for a greenish color sometimes seen in bruises.

The green indicates blood trauma that is healing in his eye, and should be absorbed by the body and eventually disappear. The owl is also being monitored by one of our veterinarians for any changes in the eye. With proper medication management and the increased appetite, we are hopeful for a full recovery.