yeah, while wing-sperpants have a range attack (that only deals 25 natural damage at lvl 20, serpants have  the exact same thing and does up to, what, +35 over 5 or 10 secs.
personally, i like Dragonhawks because of there AOE.... one drawback, when ur trying to frezze somthing and ur dragonhawk uses Fire Breathing, it somtimes hits the frozen creature, at that point, u basicaly have to Feign Death