On October 27 Liz and I saw a Sharp-shinned Hawk in deep undulating flight, just as a flicker would fly, along Bellevue Road, Talbot County.  At first we thought it WAS a flicker.  We've seen Merlins in their occasional passerine-like flight, similar to the way shrikes fly.  As with the Zone-tailed Hawk's appearance and flight similar to a Turkey Vulture I assume these deceptive, stealth flight techniques are designed to enable these raptors to sneak up on prey.  Best to all. - Harry Armistead, Philadelphia.