Natalie Angier in The New York Times:
The other day I glanced out my window and felt a twinge of revulsion delicately seasoned with indignation. Pecking at my bird feeder were two brown-headed cowbirds, one male and one female, and I knew what that meant. Pretty soon the fattened, fertilized female would be slipping her eggs into some other birds’ nest, with the expectation that the naïve hosts would brood, feed and rear her squawking, ravenous young at the neglect and even death of their own.
Hey, you parasites, get your beaks off my seed, I thought angrily. That feeder is for the good birds, the birds that I like — the cardinals, the nuthatches, the black-capped chickadees, the tufted titmice, the woodpeckers, the goldfinches. It’s for the hard-working birds with enough moral fiber to rear their own families and look photogenic besides. It’s not meant for sneaky freeloaders like you. I rapped on the window sharply but the birds didn’t budge, and as I stood there wondering whether I should run out and scare them away, their beaks seemed to thicken, their eyes blacken, and I could swear they were cackling, “Tippi Hedren must go.”