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"I screamed out for the falconer to come and help, and he came and tamed it."

It added the falconer was still confident they could catch the bird.

As William Butler Yeats famously told us at another precarious moment in history, “The falcon cannot hear the falconer ... the centre cannot hold.”

Central Park was a “target-rich environment,” in the words of James Eyring, a falconer and a retired Pace University environmental sciences professor.

For years, Italian shepherds have used Maremma sheep dogs to scare off wolves - but falconers hope to train the dogs to look out for predators from above.