As given in https://msdn.microsoft.com/en-us/library/office/dn499819.aspx#bk_WebCollection, recyclebin is a web property which we can get using
http://<site url>/_api/web/RecycleBin.
But i am getting empty results but there are items in my recycle bin. I followed some blogs and found out that this has not been yet implemented in rest calls. But i am not sure if that is the case. Can we get recycle bin items using API given above? If yes then how as i am getting empty results in my case, or can someone verify if it's not implemented yet.