Lydia Adamson: Beware the Butcher Bird (USA 1997)

From the Publisher:
When Lucy Wayles and the quirky members of her bird-watching crew arrive at a dinner for a famous field guide illustrator, they are just in time to witness him plummet to his death from the hotel's upper floors. The police call it a swan dive, but the unflappable Lucy calls it fowl play. Now she's hatching a plan to catch a killer, but if her scheme goes south--her own goose is cooked!

Lydia Adamson: Beware the Butcher Bird. A Lucy Wayles Mystery. Signet, ISBN: 0451191218 (May, 1997), 219 p., $5.99.