Poromon

Poromon is a Small Bird Digimon. The name "Poromon" comes from the Japanese word "porori", meaning to drop something.

Digimon Adventure 02
In the Digimon Adventure 02 anime series, Poromon is the In-Training form of Hawkmon, one of the series' main characters.

Digimon Frontier
A flock of Poromon can be seen fleeing from Crusadermon and Dynasmon. A Poromon is also seen at the Village of New Beginnings the second time.

Digimon Data Squad
Prior to Drimogemon's attack in the Digital World on a cliff ledge, a Poromon flew by while Marcus Damon and Agumon were looking for Thomas H. Norstein and Gaomon. Two Poromon were also among the small Digimon caught in the vortex wind created when humans who were deleting Digimon.

Digimon Fan's Opinion
Poromon should digivolve into Biyomon.  Attacks
 * Baby Breeze (Pororo Breeze)