Creating Titles

Noun Phrase:  Threats to Migrating Birds, Obstacles to Migratory Birds

Verb Phrase:  Reviewing the Obstacles to Migratory Birds

How to Fragments: How to Help Migrating birds around the Great Lakes

Questions: How are migratory birds affected by Humans? Why are migratory birds affected by Humans?  Why are migratory birds negatively affected by humans?

Sub-titles: Bird Migration: How it is affected by humans around the Great Lakes, Humans and Birds: How they affect each other during migration

I really only like one of the titles, and it is Bird Migration: How it is Affected by Humans Around the Great Lakes.  It clearly states my purpose and hints at my thesis, and its a straight forward title that leaves little to the imagination, which may be best for my audience.