“Pound for pound, these animals don’t add up to much. Dog fanciers with a couple of Rottweilers trump us in terms of sheer biomass. But, when it comes to sheer insistence, even the largest, most unruly dogs – or for that matter, your average herd of cattle – are no match for our ducks, geese, parrots, parakeets, turkeys, cats, rabbits, and other birds.”
