Text this: Persistence and alteration of the song structure of the oriental Magpie Robin (Copsychus saularis) in some areas of Northern Thailand

 ______    _    _                ___      ____    
|      \\ | || | ||     ___     / _ \\   |  _ \\  
|  --  // | || | ||    /   ||  / //\ \\  | |_| || 
|  --  \\ | \\_/ ||   | [] || |  ___  || | .  //  
|______//  \____//     \__ || |_||  |_|| |_|\_\\  
`------`    `---`       -|_|| `-`   `-`  `-` --`  
                         `-`