Hawky

History
In "The Runaway" Sokka buys a pet Messenger Hawk he names Hawky. Hawky has something of a rivaly with Momo and the two frequently get into fights. Though a new addition to the group he seems quite loyal to Sokka and apparently understands his speech. Toph and Katara use Hawky to send a letter to Toph's parents and hasn't been seen since.