This must be only "to" bird, the original master trainer is a good and competent.

这一定是只“才能”鸟，原主人驯它好能干的。

youdao

Bart's, and Suzi, a bird-dog trainer, found their Walden: a cozy three-room cabin on the banks of Cape Breton's Margaree River, some of the finest Atlantic salmon water in North America.

FORBES: Magazine Article

To become a bird ringer in your area visit the BTO website to find out where your nearest ringing trainer.

BBC: Cambridgeshire - Autumnwatch: Get closer to nature