though the flight of a bird is trackless
the local turbulence tells volumes
as billions of molecules curlicue in queue
and wingflex wrestles in a full-nelson eddy

though the air is unstained we may imagine
imprint of alulae
flux of flutter
sinusoid swoop

pull dip pull dip pull
seek with unhuman acuity
parabolize trajectories onto prey
swim the firmament with a talon-clutched meal