how do i get completed nesting tree for this fairy tale?

You can use any completed nest that you have :-)
When the fairy is spotted, she will put an egg in your nest.

You start with a nesting tree, which you can get for free in the gift shop (click the gift box icon underneath your garden).  You then build it by attracting different birds.  You need to attract five different adult birds, and either the first spotted in your garden adds to the nest, or every multiple of five after that.

You've attracted a couple of chicks though, so you must have built a nest before - have a look in your storage and see if you've still got it.  You can see when you hover over it or click it how many uses it has left - the nests have five uses until they need repairing by attracting your next five of another bird.

thanks!!

Your current nest is at 60% so you need two different birds to complete it :)

working on it now! thanks so much!

Before you had one nest in your garden that was completed. So you can also use this one.

i do? i dont see it!

The nest that is now at the left side in your garden is completed. It doesn't matter which nest you use as long as it is completed.

got it! thanks, so confusing lol!