Myrtle warbler. Photo © zenbenscience, via creative commons & flickr

While we await the region’s autumn rains, the rest of the country prepares for winter. After last year’s ordeal, flocks of Snowbirds east of the Rockies are preparing their escape routes.

Some will visit our region. Others will head south.

Our behaviour mirrors a time-honoured tradition begun by our feathered friends eons ago. Scientists recently established that the region’s migrating birds are at heart northern residents that, like their human counterparts, head south to avoid harsh winters.

For years, scientists believed migrating birds first started leaving southern territories to travel northwards across and between continents because of intense competition for space and food in the crowded tropics. After all, most songbirds in the Americas, including those that don’t migrate, live in the South American tropics, and most migratory species have close tropical relatives.

But that theory is now turned upside-down, geographically speaking. After analyzing the family trees and territorial origins ofsparrows, warblers and blackbirds—which together make up the largest group of North American songbirds—scientists found that long-distance migration was twice as likely to arise among bird ancestors from temperate regions than among ancestors from the tropics.

The majority of the species started migrating by moving their winter ranges southwards.

Read the rest of this editorial at the Victoria Times Colonist….

Dead Annas hummingbird. Photo © Lenore M. Edman, www.evilmadscientist.com, creative commons

Tonight, at 8:30 p.m., many people, businesses and institutions here on the eco-friendly south coast will be turning out the lights.

We’re taking part in Earth Hour, an international grassroots event started by former-Pearson International College graduate Todd Sampson and now hosted by the World Wildlife Federation. The goal is to celebrate our commitment to the planet by cutting energy consumption for an hour, raising awareness of our own, individual impacts on the environment, and sending a message to policy makers.

The event’s success in attracting participation is astounding. Since its start in 2007, the event has spread from Sydney, Australia, to more than 7,000 towns and cities in 153 countries. San Francisco’s Golden Gate Bridge, New York City’s Empire State Building, Seattle’s Space Needle, Ontario’s Niagara Falls and CN Tower, and our own B.C. Legislature will go dark for Earth Hour tonight—among hundreds of landmarks around the world.

The global nature of the event means a wave of more-dimness-than-usual will circle the planet, time zone by time zone.

In a way, it’s too bad the direction of the wave of darkness doesn’t run, say, from the equator to the planet’s poles. Oh, I get the circle-the-globe thing, but supposing it were possible for the wave to go from zero degrees latitude northwards, for instance, another emblem of the global web of ecological connectedness would also benefit from the resulting path of reduced lighting.

That emblem is the songbird….

Reach the rest of this editorial at the Victoria Times Colonist….