Canvasback and Sitka Spruce March 6, 2011May 20, 2008 by matt goff [Show slideshow] Female Canvasback (Aythya valisineria) observed at Swan Lake. Female Canvasback (Aythya valisineria) observed at Swan Lake. Pollen cones on the Sitka Spruce (Picea sitchensis) are starting to mature. Pollen cones on Sitka Spruce (Picea sitchensis) Pollen cones on Sitka Spruce (Picea sitchensis) Share this:ShareFacebookTwitter