HELP chicken acting funny

[satingold2014]

We went to put my chickens to bed like we do everynight they are free roaming chickens about 1 1/2 years old one of the chickens was just laying there like she was frozen my husband pick her up check to make sure she had no attack wonds on her nothing she look fine just not doing anything we put her on the ground she just tips over we have been having problems with hawks getting my chicken lost 3 this last months so i dont no if something tryed to get her befor we came out or what,she walked into her coop so what could it be any ideas?? Its like she went into shock.

 

[Wyorp Rock]

We went to put my chickens to bed like we do everynight they are free roaming chickens about 1 1/2 years old one of the chickens was just laying there like she was frozen my husband pick her up check to make sure she had no attack wonds on her nothing she look fine just not doing anything we put her on the ground she just tips over we have been having problems with hawks getting my chicken lost 3 this last months so i dont no if something tryed to get her befor we came out or what,she walked into her coop so what could it be any ideas?? Its like she went into shock.

Can you separate her/bring her in so you can monitor her behavior, poop and food/water intake?

Sometime injuries are not obvious until later on. She may have fallen from a roost or sustained an injury you cannot see (internal).