Question

Fill correct pronoun - The bird has hurt
____ left wing

Answer 1

The answer to be filled in the blank is " Its "

So the full sentence will be like that "The bird has hurt it's left wing"
Pronoun is actually a word used as substitute for  the noun(noun phrase also). Its actually a special case of the pro-form. When it comes to animals or birds we usually used "it's" as his noun substitute or pronoun.But here the " his/her can also be written as pronoun . But mostly , his/her is used when there is personal relationship between the person and animal.

Answer 2

The answer is its.

The bird has hurt its left wing. The pronoun its is used when you talk about objects or living creatures like birds, animals, insects and so on. It is used as a possessive pronoun because of the reference it makes to a noun mentioned earlier. Also, this pronoun stands apart as a separate entity and is not followed by another noun.

It is worth noting that the pronoun its is often confused with and spelled incorrectly as it’s. The word “it’s” is an abbreviation for the phrase “it is”.