"The birds do end up flying more erratically than normal," she tells Carol.

"The birds do end up flying more erratically than normal," she tells Carol. "They can't coordinate their movements as well, just the same as people . . . Usually, their whole beaks are stained with the red of the berries."

Thank you, Alison Ziesel. This is the best drunk animal story I've read this week.
http://www.cbc.ca/asithappens/features/2014/11/17/intoxicated-birds-sober-up-in-yukon-avian-drunk-tank