The study of birds accomplished by luring them with snacks.
Of course, some may be wary of being lured to BE snacks.
Additionally, you only get to study the birds that enjoy the snacks, so your sample will be skewed.
You may learn one small step at a time about individual popcorn-loving birds, but you will not make any giant leaps in learning about all of birdkind.
But continue shooting for the moon.*
Non-threateningly yet firmly, keep offering food with a strong arm as you kneel.
* Be aware that this shooting sound may frighten some birds away from your vicinity as well.