
In the latest 99 Nights in the Forest Update, the developers have added a new boss animal to the base game called the Owl or Snow Owl. This white creature drops an exclusive item called a feather that can be traded to obtain nice rewards from the Pet Watchers NPC. So, if you don't know how to get the Owl Feather in 99 Nights in the Forest, here is a dedicated guide about it.
When does the Owl appear in 99 Nights in the Forest?

The Owl appears around day 10 in 99 Nights in the Forest. You can confirm this via a small cutscene where you will find a wolf being abducted by a giant Owl. This indicates that the Owl will appear the following night and come near your base.

After getting the cutscene, wait for the Owl on the same night, who will come and sit/land outside your base. When you land, please don't move from your position, as it hates moving targets. So, stay still until it leaves your base in the morning. While leaving, it will drop a beautiful white feather that can be exchanged for incredible rewards.
Where is the Bird Watcher NPC in 99 Nights in the Forest?

As mentioned earlier, you can trade the white feather dropped by an Owl for rewards with the Bird Watcher. You can find this NPC in the eastern direction from the Missing Kid Locations Board outside your base. Just walk, you can see the NPC in front of a bench. Drop the White Feather in front of her desk to receive a free Fuel Cannister. Along with that, you can find a research meter at the back, which also gets filled with each deposited White Feather.
For more on 99 Nights in the Forest, check out How to get the Reconstruction Badge in 99 Nights in the Forest or How to Get the Humiliation Badge in 99 Nights in The Forest