Apparently, a friend of his made the most lethal mistake when inside confined spaces (using a grenade) and got him deleted. He gathered the Digiegg and used an incubator to create...a second digimon form. While he's still Hawkmon, he has a new Digimon form called "Falcomon", a wind digimon skilled of speed and stealth.

...is he carrying a pair of underpants or a handkerchief?

Digimon © Akiyoshi Hongo
Falcomon belongs to me