Related Program: Northland Morning Backyard Almanac: Clear Skies & Sunlight By Lisa Johnson • Feb 19, 2018 Related Program: Northland Morning ShareTweetEmail Credit Joshua Mayer Flickr With clear skies and sunlight this February, birch trees are creating tree wells, or tree circles, as Larry Weber calls them. Find out what else is in store the rest of February and join Larry tracking this Sunday, weather permitting of course. Listen Listening... / 8:53 Tags: Backyard AlmanacLarry WeberFebruaryBirch TreesShareTweetEmailView the discussion thread. Related Content Backyard Almanac: the ice of Lake Superior - and a tracking workshop on the way! By Lisa Johnson • Feb 9, 2018 ©Lisa Johnson Today marks the 12th straight day of below-zero temperatures and 40 days of them so far this winter. Despite that, the low angle of the sun means we have wrap-around sunrises and -sets, we're up to ten hours of daylight, and Larry Weber is leading a Critter Walk as part of the Sam-Zim Birding Festival!