Found a place with tons of egrets (very useful for exotic side mission) : r/reddeadredemption
Red Dead Redemption 2 Exotic Locations Guide - All Exotic Request
Trinkets - Page 2 - Red Dead Online - GTAForums
Egret Egg : r/RedDeadOnline
If you're looking for Snowy Egret feathers for the trinket, but can't find any, check this spot anytime before 1pm ingame. I found all 3 of mine here. Of course, one spawns
Egret | Red Dead Wiki | Fandom
Egret locations in Red Dead Redemption 2 | Shacknews
Egret locations in Red Dead Redemption 2 | Shacknews
RED DEAD REDEMPTION 2 - Snowy Egret & Reddish Egret Location (Snowy/Reddish Egret Plume Location) - YouTube
Red Dead Online - Egret Locations - RDR2 Daily Challenge Egrets Skinned - YouTube
Egret locations in Red Dead Redemption 2 | Shacknews
How to farm Egret Plumes fast (get all in less than 1 hour) : r/reddeadredemption
Reddish, Snowy, Little Egret Plumes & Spoonbill Spawn Location RED DEAD REDEMPTION 2 - YouTube
Exotics Collectibles - Red Dead Redemption 2 Walkthrough - Neoseeker