Neverwinter

This is done in the weekly quest "Retrieval Operation." Normally, you can only run this twice in the first week, and once each week after that. There is a way to unlock the achievement now if you have not done your runs for the week.

Play the quest normally until you have the 3 feathers. Once you have them, you can go into your journal and abandon the quest by pressing Y on top of the quest in your log. After that, I used the VIP signpost to travel back to Protector's Enclave and started the quest again. On your fifth successful run, the achievement will unlock.

Note: I mentioned successful runs because my fifth normal run ended up bugged and skipped past collecting the feathers. Quitting out and starting the quest again fixed that issue.

Not super important for the achievement, but the repeatable version of the quest puts the feathers in different locations and there are 2 scorpions at the end, but it's the same quest.

After the dungeon maintenance and important documents quests, you will see some notes sparkling on the desk in the headquarters. Inspect them to enable a quest to reteieve an egg. Talk both NPCs to accept and advance it, then head outside to board the airship and start it. After a boring free fall featherfall session which you can skip with the I Am Stuck -Defeat Me option, you'll be tasked with finding the nest. Upon finding it the giant bird will knock you away. You will need to find 3 feathers then head down to the giant to have him fight the bird, allowing you access the nest and egg to complete the mission.

It lets you do the mission twice this first week for 6/15. You will need to repeat it for a few weeks. Alternatively, you can suicide after finding the 3 feathers and use the portal to exit, abandoning all progress. Then restart the mission, collect 3 feathers, and suicide/abandon progress again. Rinse and repeat a few times to unlock this right away if you are impatient.