Shietdawg is right though ; in term of effectiveness, aspect of the hawk is not the best. Here a guide hunters who are currently leveling can follow (might be late for the one who originally posted this thread though).
10-14: 5/5 Endurance Training
15-16: 2/2 Improve Revive Pet (You will need it)
17-19: 3/3 Thick Hide
20-21: 2/2 Pathfinding (Running faster is always appreciated)
22-26: 5/5 Unleashed Fury
27-29: 3/5 Ferocity
30-30: 1/1 Intimidation (Use it so you pet takes less damage, taunt the mob etc)
31-32: 5/5 Ferocity (put the last two points in Ferocity)
32-33: 2/2 Spirit Bond (Please also note that it increases slightly the threat made by your pet)
34-39: 5/5 Frenzy
40-40: 1/1 Bestial Wrath (Use it everytime it's up)
41-46: 3/3 Humanoid Slaying and 3/3 Monster Slaying (you take first whatever you want)
47-51: 5/5 Efficiency
51-56: 5/5 Improved Hunter's Mark
57-57: 1/1 Aimed Shot (I usually dont take it before as it can be costly in mana, take aggro from your pet etc.)
58-60: 3/3 Hawk Eye or 3/5 Lethal Shots.
http://db.vanillagaming.org/?talent#cV0GbxgotVeoZI or
http://db.vanillagaming.org/?talent#cV0GbxgotVxohZISome points can be discussed in the Marksmanship and Survival tree, it is usually your personal preference and how you feel about it that matters most. My choice are based on maximizing your pet's damage outputs and your blank (auto-shot) attacks.
The talents in Beast Master are however arguably the most adapted to leveling.
Hope this helped.