Picoides scalaris

tags: Ladder-Backed Woodpecker, Picoides scalaris , birds, mystery bird, bird ID quiz [Mystery bird] Ladder-Backed Woodpecker, Picoides scalaris , photographed on the Katy Prairie, Houston, Texas. [I will identify this bird for you in 48 hours] Image: Joseph Kennedy, 1 January 2010 [larger view]. Nikon D200, Kowa 883 telescope with TSN-PZ camera eyepiece 1/400s f/8.0 at 1000.0mm iso400. Please name at least one field mark that supports your identification. Review all mystery birds to date.