About 100 yards down a steep shrubby slope, there’s a low post supporting a green and blue plastic jug. It’s straight out of a psychedelic Tupperware party.
“This is a blue vane trap,” says Sydney Watkins, an Oregon State University field technician.
Watkins can’t see the ultraviolet light reflecting off the funnel-shaped mouth of the trap, but bees can.
“The bees really like the UV, so that's what attracts them,” she says. “We can look inside to see if we got anything.”
She peers through the narrow opening.