How do I get the ostrich

Hint 1 of 6:

Read the letter in the same room.

Hint 2 of 6:

Who would be likely to have ostrich nip?

Hint 3 of 6:

The Pet Shop.

Hint 4 of 6:

It's in a panel in there.  EXAMINE CEILING.

Hint 5 of 6:

Open the panel and get the nip.