Birds in decline: a wake-up call for the continent

Ian Stewart A major analysis published last week (Rosenberg et al. 2019, Science, downloadable by scrolling down here) makes depressing reading for anyone interested in birds or in nature in general. A team of leading North American researchers analyzed almost 50 years of data from multiple sources and calculated that about 3 billion birds (= …

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Fall webworms

Ian Stewart One of my favorite books is Arthur Conan Doyle’s ‘The Hound of the Baskervilles’, in which a mysterious beast pursues Sherlock Holmes through the eerie mist of an English moor. Driving the back roads of northern Delaware in the early morning reminds me of this gloomy setting because many of the trees are …

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Backyard invaders

Ian Stewart & Lori Athey Now that spring is here many Delawareans are enjoying the colorful wildflowers blooming in their backyard, local parks and road sides. Unfortunately, the great majority of those currently flowering are alien weeds which were either deliberately or accidentally introduced by Europeans. These plants found themselves in a new environment with …

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