Log in during the event period which is of November 17, 2021 (Wed) after maintenance until December 1, 2021 (Wed) before maintenance to obtain the item below from the Challenge (Y) menu :

Place the [Event] Kuku Nest in a Garden

For those who don't know how to do it, just type '' Fence '' at the top right corner of the in-game screen as shown bellow 

I highly recommend to get the small fence of the NPC Martina Finto for 3 Contribution pts to make it easier for you. Then Right click the fence while in a Combat Zone to set up and place the fence. After that, enter Placement Mode (R) and place the [Event] Kuku Nest.

Once a specific amount of time has passed and the nest is ready, harvest the [Event] Kuku Nest.

Make sure to press ( R ) key one more time to get your [Event] Kuku.

The event Challenge can only be completed once per Family. 

That's all about this guide, don't hold back if you want to chat or have questions to ask, hit me up on my DIscord : Dustan#0325

Enjoy your time !