When Verde Means Gold

Autumn on Upper Verde River

Just as a migratory bird feels an irresistible inner urge teach fall, so do I experience a powerful restlessness satisfied only by ignoring my in-box, pushing aside the endless piles of papers begging to be shuffled, and taking off to some quiet corner of nature when I can embrace the changing of the seasons with full attention.

Autumn hasn’t been waiting for me—the aspens have scattered their yellow coins already up at Mt. Francis, and the maples have displayed their crimson badges at Mingus Mountain without my approval.  I am not teaching my Interpreting Nature class this fall, which usually provides me a legitimate excuse to get out there.   Thus, if I am not to miss the whole gaudy show of carotenoids, anthocyanins, and other pigments, I have to seize the moment, and yesterday afternoon I did just that. Continue reading

I’m a Beaver Believer

Verde River Beaver Dam

Beaver dam on Upper Verde River

So often we hear horror stories of environmental degradation.  Once in awhile we need to hear the good news, the reversal of misfortune, and I’m here to tell you one such story.  The Upper Verde River in Arizona has risen from its deathbed, and the main reason is the return of the beaver after the removal of the cows.  Join me along the banks of Granite Creek as I tell my friend Joe about my impressions of the value of beavers in restoring an ecosystem.  http://www.youtube.com/watch?v=kTlSKffiSPw&feature=youtu.be. 

Deepening the Time Scale: A Puzzle in Sycamore Canyon

Though each organism is inherently a time traveler, its genes a partial chronicle of its evolutionary history, we may be the sole species to be able to reflect on that deeper history.  People with deep imaginations can visualize the ape in our behaviors, the prototypical vertebrate in our embryos, the symbiotic merger reflected in our mitochondria.  Some can look at a hillside and envision it as a product of tectonic upheavals, erosional incisions and depositions, the lithification that turned sediment into rock that has weathered into a substrate supporting juniper, cactus, and spiny lizard.  With some training, there is hope for those of us who don’t normally see so well.  Our temporal blinders may be lifted, our spirits uplifted by the joys of discovery and insight.  Informed imagination – that greatest of time machines – can take us further toward understanding the Sky Islands than mere physical descriptions ever will.  Join me, then, for a little time travel, not to see it all (who has time?), but for a sample of how informed imagination works.            Continue reading

Borderlands Musings

Cajon Bonito in Sonora in August 2011

BORDERLANDS MUSINGS
By Walt Anderson
Four decades ago, I was a grad student in the School of Natural Resources at the University of Arizona in Tucson. Well before Arizona gained its strong reputation as a hotspot for American birding, there was a small community of birders who sought out the neotropical specialties that crossed the border and the eastern vagrants that popped up now and then in desert oases. There were seasoned experts like Gale Monson, whose knowledge of Southwest birds was encyclopedic, and ragtag graduate students like Carroll Littlefield, an expert on Sandhill Cranes, and Ted Parker, later considered by many as the superstar of birders and field ornithologists. There was none of the competitive, obsessive listing that later infected the birding world, a narrow-minded focus on seeing and ticking off species as fast as possible, the interest in each bird satisfied by a mere checkmark. No, these were naturalist birders, keen observers who sought to learn about the entire ecosystems in which birds were a part. Where a bird nested, what it ate, how it migrated or molted—such were the questions that occupied the curiosities of this generation of field biologists.

Whenever possible, we would load up a tank of gas at twenty-some cents per gallon and take off to one of our favorite oases, ostensibly to bird, but even more so to explore wild places and experience the joys of discovery in nature. Often our paths took us through the dusty border town of Douglas, Arizona under the appalling smokestacks of Phelps Dodge, then likely the largest single point-source of pollution in the Southwest, if not America as a whole. Continuing east along teeth-chattering gravel roads, we passed through the “malpai” badlands of rocky hills, creosote bush, ocotillo, and occasional flash-flood-prone desert washes. We’d pass the old ranch of Texas John Slaughter, where we’d stop to glass for whistling ducks, Neotropic Cormorants, Vermilion Flycatchers, and other oasis birds drawn to the artesian springs there (later much of this became the San Bernardino National Wildlife Refuge established primarily to help save native fishes of the Rio Yaqui watershed).

Our final destination lay at the end of the road just into New Mexico right where that state intersects with Arizona and Sonora: a green finger of Mexican riparian woodland, Guadalupe Canyon. We would stop up at the Magoffin ranch house to pay our respects and get their generous permission; then we’d explore the main canyon of large cottonwoods and sycamores and venture up thorny side washes for arid-adapted specialties. At night, we would listen and watch for the Ridgeway’s Whip-poor-will (now called Buff-collared Nightjar), one of the species that barely entered the United States at this point.

We were certainly aware of the proximity of Mexico, but only because we could count birds seen on this side of the weak barbed-wire fence for our U.S. list. At night as we lay in sleeping bags under the canopy of trees and the overarching dome of stars in an unpolluted sky, we might awaken to the footsteps and breathing of men, usually alone or with one companion, heading north to work, seeking employment opportunities that were unavailable south of the border. We might meet them at dusk or in early morning, where a polite exchange of “Buenos Dias” or “Hola” along with shy smiles would be the extent of our interchange.   Continue reading