Falcons are deadly hunters that can rocket towards their prey at upwards of 300 km/h to take them on the wing. But how do they make sure their speed kills their prey — and not themselves? Dr. Suzanne Amador Kane, a physicist at Haverford College in Pennsylvania, has been studying the question with new technology. She collaborated with falconers to put tiny cameras on falcons, on their heads and their backs, which allowed them to see what the falcon saw while it hunted. She found that the birds' technique involved choosing an intercept angle that allowed them to best see their prey, while disguising the speed of their approach.