My Diamond Dove is acting very strange. I put her back inside her cage, and she flew onto the ground. She threw the head back and started twisting it around. She also put her wing out and started shaking it. This only happens when she lands on the ground after flying. It also only happens once. The first time she lands on the ground, she does it. If you make her land on the ground again, she will not do it. But I saw her doing her head shake one night, but it wasn't as bad. This is VERY weird! I don't know what it is. I need some help!