dubious, doubt-filled, debatable

“Let me get this straight —” Thalia stands with hands on hips, “free birds are going to willingly climb into a cage for dead, dehydrated worms?”
When Nia made the purchase she felt certain the feeder would solve their ravenous squirrel situation. “The promo video showed bluebirds feasting!” After more than a week, without a single mealworm eaten, she was no longer so sure.
“If they can get in, they can get out…” Calliope moves the feeder from the maple to the shepherd’s hook, then sprinkles protein-rich treats along the edge of the tray. “What we need is a courageous early adopter. Let’s give it some time.”

