Natural History Journal

This year, I started writing a monthly series of posts designed to help those who are brand new to birding, as well as those who are looking to improve their birding skills.  I've been a life-long lover and student of all things nature, but it's only been about five years since I began to seriously watch, study, and record birds.  Clearly, I have a long way to go and much to learn! This month, I'd like to focus on the magical, mystical art of birding by ear. The cheery song and soft chuck calls of the familiar backyard American Robin are easy to learn for beginning birders across North America. Every bit as much art and music as it is science, birding by ear opens up worlds of possibility for the astute observer of birds.  Most birds are highly vocal, with ranges of calls and songs tailored to various situations.  Most commonly, bird vocalizations fall into two very basic categories: calls, such as contact calls, alarm calls, flight calls and begging calls, and s

This series on what makes California such a unique and special place began with an overview of the state's incredible biodiversity .  Then, a few days ago, we talked about California's climate.   (Actually, we did much more than that: we went through an entire crash course on atmospheric conditions and threw in a few laws of physics just for fun.  If you missed it, catch up here .) Today's post is broken into four sections that each realistically deserve not only their own article, but their own text book(s)!  Those sections are: California's Geomorphic Provinces Plate Tectonics and Geologic Processes Soils The Rain Shadow Effect Much like we trekked all the way to the source and recognized the sun, along with Earth's tilt and rotation, as the ultimate driving forces of California's climate, today we'll peel back several more layers of science to take a look not only at California's diverse topography, but the tectonic forces and geologic proc

California is certainly a special place.  A treasure trove of natural wonders and beauty, the state encompasses one of the world's hotspots of biodiversity .  But what makes California so remarkable, so rich in endemic plants and animals found nowhere else in the world? There have been a couple of key factors at work in this mountainous West Coast state through the ages, shaping it into what it is today: one of those factors is its unique climate, and the other is its diverse topography and underlying geology. Today, we'll take a look at California's very special climate. A quintessential Californian landscape - golden, oak-dotted hills - inside the now-imperiled Del Puerto Canyon, a hotspot for biodiversity, endemism and really neat geology in the central Coast Range. The mild, Mediterranean climate of California is shared by only four other regions in the world: central Chile, the southwestern tip of South Africa, southwestern Australia, and the Mediterra

There are a lot of reasons to love California, particularly as a naturalist. The world's six major biomes, represented in California: Top row: Forest (Redwood State Park); Freshwater (Sword Lake); Desert (Joshua Tree National Park) Bottom row: Marine (Monterey Bay); Grassland (Stanislaus County prairie); Alpine tundra (Yosemite high country) California is a land of extremes, from submarine canyons to alpine peaks, from high heat and aridity to remarkable snow pack.  It boasts the tallest trees, the most massive trees, and the oldest [non-clonal] trees.  Within its borders, one can stand on the tallest point in the conterminous United States (Mount Whitney, 14,500 feet above sea level) as well as the lowest (Badwater Basin, 282 feet below sea level). In addition to the greatest difference in elevation, California also has the greatest range of latitude, the highest soil diversity, the largest range of average annual rainfall and the greatest range of average annual tem