I would NOT say that most Airedales are good with chickens, or other small prey animals, for the matter of fact.
Airedales are HUNTERS. They will hunt anything, birds, vermin, snakes, otters, you name it. They were also bred to hunt large predators, such as bears. However, as with everything, training and conditioning can do wonders. My two Airedales ARE hunters. They have hunt rabbit, mice and snakes before. But I trained them NOT to hunt our chickens.
I have also managed to train another high prey drive Airedale not to eat my chickens, when he came here to stay for holiday, while his own human went on holiday. He is also a great hunter, of beaver, squirrels and other mammals, but I taught him not to hunt my chickens. And he never even tried once.
Here's a picture of Rummy and his freshly killed garden snake
Here's Rummy and his mice, which he caught at night on our property.
But here is Rummy again, being tender with his chicks, which he is trained to guard and protect.