Question

The blue jay is often very --------. What predicate adjective can I put where the ------ are?

Answer 1

The word that goes in the 1st blank is agressive.

the wor that goes in the 2nd blank is territorial.

Answer 2

Well, the blue jay is often very agressive, so you can put "agressive".  Alternatively, it's also territorial, so you can put "territorial" too. Also: noisy, bold, curious