Sun Mote Copse Garden of the Hesperides

"A long time ago, when the Great Spirit had created the birds, he assembled them all and gave them their colours and particular songs. All was going well, but, when it was nightingale's turn - and she was the last one - the only colour the Spirit had left was brown and grey, but there was no music left," Wraen told. In the original version the preface had been a lot longer and the puppy had fallen asleep before she had got to the best parts.

"Feeling bad for the little modest bird, he decided to give her a gift to learn songs and with this the nightingale set out in the world to find a song that she would like the best," Wraen paused here for a bit, doing a mental count of the bird species she knew and recognized by their voices. "Since it was evening already, she first visited the owls, listened to their various hoots, screeches, cries and mumblings and after a few tries herself, had mastered their craft. Yet... it did not feel enough.

So - early next morning the nightingale set off and met a band of little sparrows in the bush. They were not very friendly in the beginning, being rowdy little birds, but soon they were quarreling among themselves and forgot all about the little musician in the making. The nightingale spent the better part of her day in their company, memorised their songs, tried them herself. Yet... it still did not feel enough.

So - nightingale wasted no time and during this day and the next she encountered many little songbirds - little wrens, crafty and creative finches, colourful orioles, robins, blackbirds. She learned the mumbling song of the pigeons and the cawing of crows and ravens. She chattered away with swallows. She even spent a brief time with the sea-birds, only to realize that their songs were hardly songs at all. Despite all of this extensive search... none of the songs felt right to claim as her own.

Eventually tired from the journey, the nightingale settled down in a tree, hid her head under her wing and slept. And when she woke, she suddenly knew, what to do. Rather than sticking to one particular song, she improvised and used all the tunes and sounds she had learned. For this reason the nightingale is known to be the grand master of music among birds. Because no two songs are alike," she finished. 

References:
Variety of owl hoots: https://www.youtube.com/watch?v=5UFNa-dD2Po
Birdsong for beginners: https://www.youtube.com/watch?v=G8-dOm7-WEI
More birdsongs: https://www.youtube.com/watch?v=O5gZNCm05-U