DCHP-1 Online
crow-beater [< Cdn F; see 1959 quote] 
n. the eastern kingbird, Tyrannus tyrannus, from its habit of driving other birds from its nesting site.
- 1866 (1873) Allow me to introduce you to a brave, indomitable fellow--the King Bird; . . . schoolboys know him as the Crow-beater.
- 1959 EASTERN KINGBIRD . . . Batteur de corbeaux (Crow beater. It attacks, sometimes even alighting upon and pecking larger birds that invade its nesting territory. Que.). . . .
- 1866 (1873) Allow me to introduce you to a brave, indomitable fellow--the King Bird; . . . schoolboys know him as the Crow-beater.