Purple Martins Advanced Training
18:04
Purple Martins and their man: Peter Huszcz
1:03:51
Uncovering the Mystery of Purple Martin Migration
1:12:52
Your Purple Martins NEED predator protection!
20:18
Discovering - Purple Martins
49:05
The magic of Purple Martins
1:18:55
Advanced Training - Texas Native Cats
29:37
The Annual Cycle of Purple Martins
1:27:01