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10 September 2021 – The Red-spotted Purple Butterfly copies the Pipevine Swallowtail which is toxic to birds in the southern states. In the north, it has a broad white stripe and is called the White Admiral. This is an example of Batesian mimicry. More about butterfly evolutionary mutations here.
12 August 2021 – The Brown Thrasher is a hiker, striding through wooded thickets in search of insects. It is equally a master of birdsong, having a greater repertoire than any other songbird, including its better known cousin, the mockingbird. For more about the life and times of thrashers, read the article.
17 July 2021 – The columbine is summer’s finest flower. Its name is derived from Columba, the Latin word for dove, appearing to some as five doves with their tails upward and wings swept downward. It is configured to be pollinated by the ruby-throated hummingbird. The full article has details
11 June 2021 – Spring is almost over and the wood frog tadpoles only have a few more months to mature before the ephemeral pool dries. Vernal pools are key habitats for many amphibian and other aquatic species. Learn more about the nature of the pools and why they need protection in the article here
14 May 2021 – The periodical cicadas are “magical” as their genus name Magicicada suggests. The 17 -year cycle (the last was 2004) is also one of the species names septendicum. Found only in North America, they the most compelling reminder of the enduring nature of evolution. Full article
19 April 2021 – April showers bring may flowers, and some of them are onions, like the Nodding Wild Onion, the subject of this month’s research. Details are at the added page.
22 March 2021 – Spring has sprung! The Eastern Fence Lizards are out again. Details if interested
19 February 2021 – The Royal Fern Family (Osmundaceae) includes the royal fern, the cinnamon fern and the interrupted fern. They are the oldest fern families, and related to all other extant ferns. Details in the article
22 January 2021 – The Bird’s Nest Fungus has nothing to do with birds or nests. The eggs are clusters of spores called peridioles that are splashed out by raindrops. More here
21 December 2020 – The first day of winter, anticipating the ultimate spring and summer of flowers, birds and berries like pokeweed, an edible and poisonous plant. More here
27 November 2020 (Green Friday) – Tiger Beetles are frequently seen scurrying underfoot along the trail. They move so fast that they have to stop occasionally to see where they are going. So why are they bright green? More on this subject here
Contact Information: William Needham – Needham82@aol.