It sounds silly, but the Migratory Bird Treaty that prohibits feather collection is protecting birds and saving lives.
How Two Women Ended the Deadly Feather Trade
Is it Safe to Collect Feathers? - Giggle Magazine
Wildlife trafficking threatens hyacinth macaw eggs
NestWatch Partly Eaten Songbird Egg ID!? 🙁 - NestWatch
Duck Decoys: Everything You Need to Know About Collecting
In search of Syria's pigeon smugglers - BBC News
What to Do If You Find a Bird Egg – Mother Earth News
Collecting bird feathers in the United States – legality and
I Ate the California State Bird, and It Was Yummy