Hai! Perhaps your sentence needs to be added to the alternative translations. So, please report it.
More translations can be added, depending on the exercise, being in Indonesian like this or the reversed sentence.
For example, "It is my chicken." can be translated as:
Ini ayam saya. / Ini adalah ayam saya. (These are the same for "This is my chicken.")
Itu ayam saya. / Itu adalah ayam saya. (These are the same for "That is my chicken.")
Also, "ayah saya" could be changed as "ayamku".
I hope all the possibilities can be added soon.
Selamat belajar! :)