A new group of free employees has been added to the French workforce. So far, a theme park in western France ________ (employ) six birds, more exactly six crows, to collect and deal with garbage ---- mainly cigarette ends and other small pieces. The birds take the __________ (collect) trash to special bins where they can receive bird food in exchange ______ putting away the litter.
Park president Nicolas said, "The purpose of employing the crows is to educate people to take on their social ____________ (responsible). Since the birds are able to do _______ we are much more able to do than them, we should do this by ourselves."
Crows have long been observed for their various amazing _________ (display) of intelligence. They are one of the __________ (smart) groups of animals on earth, with remarkable problem-solving, tool-making, and deductive reasoning skills.
in addition to inspiring humans to pick up trash, the clever crows currently _________ (work) at the park are pretty excited to put their intelligence to work.
"It has become ______ exciting game for them," Nicolas says. "They pick up the trash on the ground, and every day they ___________ (reward) for what they have done."