Answer: Keratin protein
Step-by-step explanation:
Keratin protein is a type of protein which is found in the hair and nails. It is the protective covering which has a very chance of scratching and tearing and other types of the cells.
Keratin is also found in the claws of the parrot which helps the parrot in adhering the substances and holding trees et cetera.
It is a protein which is found in similar form in the body of parrot as well as in human beings.
Hence, the correct answer is Keratin Protein