These critters are surprisingly like the giant owl and giant eagle, to be honest. 4 HD Large magical beasts with flight, high strength, and mouthpick potential. Sure, there's some random differences, such as a slightly better stat array, no evasion, and Detect Evil and Detect Good at-will, but at their core these monsters aren't that different from their avian brethren. +1 LA.
Next are phantom fungi.