Not so thrilling triller, for some

Would you be more sought after if a migrant?

Some birds are named for their colours, some for the calls they make.

The Pied Triller (Lalage nigra) is named for  both, its pied colour (especially conspicuous in the male whilst the female is more greyish brown) as in birding term refers to black and white.  And does it trill, reflective of its 'triller' name - some say it does especially of the male, some say otherwise - go listen!