“But what is legality, if it is legal to torture a goose or a duck by putting it in a cage where it can’t move, shoving a tube down its throat, and force-feeding it to make its liver fatty in order to make foie gras for people to spread on crackers? The Migratory Bird Treaty Act of 1918 applies to crows because some of their populations migrate. But the treaty provides that a species under its auspices may be hunted under regulations preventing detrimental effects on the overall population if there is good cause. Crows are exempted from the act’s protection when they “harm livestock” by eating corn. So American crows, Corvus brachyrhynchos, are considered great for target shooting. There is no bag limit. There used to be a specific crow-hunting season, beginning in September in some states. But in my state of Maine you can now shoot crows in any number at any time, except on Sundays. Migratory woodpeckers, such as the northern flicker, in contrast, are as far as I know not fair game even when they are damaging a home. And I think that is fair and reasonable.”