Category Archives: Bill’s Notes

Signs of Spring 14: Yosemite (California, Part 3)

(Click here if you would like to listen to an audio version of this blog!) Yosemite Valley is located on the western slopes of the Sierra Nevada mountains of California. It is a tight walled, U-shaped space that contains some … Continue reading

Posted in Bill's Notes | 1 Comment

Signs of Spring 13: Giant Trees (California, Part 2)!

(Click here to listen to an audio version of this blog!) We drove up from Fresno into Kings Canyon National Park on snow covered roads. The trees in the surrounding woods were frosted with fresh snow and there was a … Continue reading

Posted in Bill's Notes | Leave a comment

Signs of Spring 12: California (part 1)

(Click here for an audio version of this blog!) California is an impossibly big and diverse place. Over its 900 miles of length there are a multitude of landscapes and habitat zones. Some of these are human dominated, and some … Continue reading

Posted in Bill's Notes | 1 Comment

Signs of Spring 11: Predators

(Click here to listen to an audio version of this blog!) The interaction of large carnivores with small and medium sized carnivores was explored in a wildlife population study conducted by Penn State University researchers (Penn State News, August 8, … Continue reading

Posted in Bill's Notes | Leave a comment

Signs of Spring 10: Bees and Herbicides and Pesticides, Bats and Viruses

(Click here to listen to an audio version of this blog!) Glyphosate is the active ingredient in the herbicide Roundup, and, not surprisingly, it is the most widely used herbicide in the world. Glyphosate functions by inhibiting the activity of … Continue reading

Posted in Bill's Notes | 1 Comment

Signs of Spring 9: Sycamore Trees

(Click here for an audio version of this blog!) The Ohio State University campus is a beautiful place to walk and wander, and I did a lot of each back when I did my Master’s degree there. One place on … Continue reading

Posted in Bill's Notes | 1 Comment

Signs of Spring 8: Nests

(Click here to listen to an audio version of this blog!) Over the past five years Deborah and I have gotten very familiar with many types of birds’ nests. Working with the Cavity Nesting Team at Harrison Hills Park we … Continue reading

Posted in Bill's Notes | Leave a comment

Signs of Spring 7: The Cicadas Are Coming!

(Click here for an audio version of this blog!) Every seventeen years the quiet parks and forests of Western Pennsylvania explode with sound. Over a four or five week period in May and June periodical cicadas (also called “seventeen year … Continue reading

Posted in Bill's Notes | 2 Comments

Signs of Spring 6: Mourning Cloaks, Commas and Spring Azures!

(Click here for an audio version of this blog!) Last spring (Signs of Spring 3, March 15, 2018) I talked about the evolution of the Lepidoptera (butterflies and moths). Fossilized lepidopteran wing scales have been dated to over 200 million … Continue reading

Posted in Bill's Notes | Leave a comment

Signs of Spring 5: Early Spring on Rock Furnace Trail

(Click here to listen to an audio version of this blog!) Deborah and I went down to the Rock Furnace trail last Saturday around noon. It was cloudy but warm (65 degrees) and quite humid. The weather forecast was for … Continue reading

Posted in Bill's Notes | Leave a comment