Market hunting pushed the passenger pigeon to extinction. It wasn't the shooting that did it, though. The numbers easily withstood the shooting. The problem was that the hunters learned to hang out at the nesting sites waiting for huge flocks to come in from feeding. The pigeons quickly abandoned the nests and wouldn't nest elsewhere so there was no next generation. Most of the population bust occurred within a couple of years from no replacements being hatched. If the hunters had simply avoided the nesting sites, the population would have likely supported heavy hunting indefinitely.
“In a time of deceit telling the truth is a revolutionary act.” ― George Orwell
It's not over when you lose. It's over when you quit.
