Respuesta :
Answer:
"That"
Explanation:
Relative pronouns are used to refer to nouns placed right before them and introduce relative or adjective clauses, which are clauses that describe, modify or provide further information of a noun. There are 5 relative pronouns: who, whom, whose, that, and which.
"That" is the most informal of all relative pronouns and is used to refer to people, animals, and things. In the sentence, "that" is referring to the birds and it is also introducing a relative clause "that have the strongest talons" which gives further and essential description about the birds.