earth notes http://knau.org en Earth Notes: Sedona Wetlands Preserve http://knau.org/post/earth-notes-sedona-wetlands-preserve <p>What happens to the water that runs down your kitchen or shower drain? If you live in Sedona, Ariz., the answer is that it helps migratory birds along their way.</p><p> Wed, 04 Jun 2014 15:51:31 +0000 Peter Frederici 48327 at http://knau.org Earth Notes: Sedona Wetlands Preserve Earth Notes: Osprey http://knau.org/post/earth-notes-osprey <p>They&rsquo;re sometimes called fish eagles, for good reason: their diet is almost all live fish. They&rsquo;re big raptors, hard to miss soaring above the scattered rivers and lakes of the Southwest&rsquo;s high country. They&rsquo;re ospreys, birds that belong to the summer skies of the Colorado Plateau.</p> Wed, 16 May 2012 11:00:00 +0000 Rose Houk 13929 at http://knau.org Earth Notes: Osprey Earth Notes: Rattled on the Trail http://knau.org/post/earth-notes-rattled-trail <p>Few sounds in nature are as instantly recognizable and terrifying as the sudden rattle of a pit viper. No matter how often you&rsquo;ve heard it, it&rsquo;s a sound that sends a jolt of adrenaline and raises the hair on the back of the neck.</p><p>But look closely, because maybe what you&rsquo;re hearing isn&rsquo;t a rattlesnake at all.</p> Wed, 25 Apr 2012 15:46:57 +0000 David Lukas 12885 at http://knau.org Earth Notes: Rattled on the Trail Earth Notes: Controlling a Weed—With a Bug http://knau.org/post/earth-notes-controlling-weed-bug <p>When it comes to controlling the many non-native, invasive plants in northern Arizona, weed warriors call on every tactic in the book. As they seek to minimize the spread of a weed called diffuse knapweed, they&rsquo;re turning to a tiny ally: a weevil that loves to eat knapweed seeds.</p><p>Diffuse knapweed is a low-growing shrub that originated on the Russian steppes. Since the 1980&#39;s, it&rsquo;s taken over roadsides and pastures in the region. It&rsquo;s a heavy seed producer and a tough competitor against native plants.</p> Wed, 16 Nov 2011 16:29:31 +0000 Tristan Clum 4503 at http://knau.org Earth Notes: Controlling a Weed—With a Bug