Most mornings for the past decade, poet Scott Wiggerman has walked the trails at Austin's Mueller Lake Park, an urban space created on land that once held the city's airport. Awake to the landscape as he walked, Wiggerman stopped from time to time and jotted a word or phrase for a poem that would come later. Leaf and Beak is the product of these walks, of the poet's ever watchful eye, of the discipline he learned mastering the sonnet. Readers are in good hands here. The sonnets-seventy-five of them-flow so smoothly you can forget you're reading a sonnet and just let the images take you in,...