Rainbow Hen Pet

This Pet Egg can only be won during Renzo's Travelling Fair Mini-Events.

If it becomes available by other means at a later date, we'll update this FAQ 

Once you've exchanged 950 chips to get this item, you can place it on a 1x1 square.

Once the Egg is ready to hatch, you'll get a one-time hatching bonus of 450 EP.

Once hatched, it will be called a "chicken coop for rainbow hen"

Then you can click on the Rainbow Hen Pet to get your "effect" : 

(At this moment, placed on the Island will give 300 Bahamarama EPs)

You can harvest the Rainbow Hen pet every 16 hours.

You can have a maximum of one item per field.

Source Official Farmerama Forums.