One of my chicks, (about 5 weeks) has a crooked toe. Just noticed it today so I don't know if its an injury or developmental thing. She eats drinks just fine but is clumsy with perching and doesn't roam as eagerly as the other two. I saw it today because she kept trying to jump up on the perch and would do a slow motion fall off like she just couldn't balance. What should I be looking for? What can I do ?