Nature

He is the one I love to see 
As every morning on the tree 
That grows just besides my room 
He sings his songs: he is a groom. 
Beginning with some lovely creaks, 
He trills long chimes, stops them and peeks 
To find the audience (not me, 
In fact I’m nothing as I see). 
He looks for HER that’s grey and green, 
And very shy, and hardly seen. 
Among the leaves of our limes 
His bride enjoys these magic chimes. 
Well… Have you guessed? What? Dear me! 
Look at his picture on a tree! 
http://img-fotki.yandex.ru/get/5505/posnadezhda.f/0_65491_6a9b8a1e_XL

Little singer.