It’s autumn! Kids are back in school while we prepare our yards and freezers for winter and plan to vacate south. Okanagan wildlife tend to migrate, estivate or spawn.
Some people think that hummingbirds catch rides on the backs of geese for their migratory trip down south. Truth is; hummingbirds are well on their way to Mexico when the geese are just taking their “practice flights” for migration to the coast or just into the warmer US.
Physics gives hummingbirds an advantage with a smaller, light body weight. They just need to refuel all along the way to maintain their energy. That’s why all hummingbird feeders should always be taken down by mid August. If the “hummers” stay too late, they could succumb to freezing.
Big Canada geese, on the other hand, store fat for their trip. That’s why they’ve adopted the energy efficient “V” flight formation.
Our great blue herons (which nest on 24th Street) have already dispersed to various open-water lakes for the winter. Some have migrated to the coast to winter on good fishing grounds.
Most birds migrate at night following the stars (like sailors) along migratory pathways (usually air currents of least resistance). Some of our birds migrate all the way down to South America.
I love sitting back on mosquito-less, moonlit September and October nights with binoculars in hand to spot flocks passing in the night sky. If you’re in a quiet spot; listen. You might even see bats migrating to their winter colonies further south. Their “flutter” of wings distinguishes them from birds.
Don’t go to the Allan Brooks Nature Centre looking for the yellow-bellied marmots, now. These large rodents, like the Columbian ground squirrels on Silver Star, have gone underground for an early rest to “estivate” while they’re still fat from summer’s seed bounty. They emerge with young in April.
Snakes, frogs and other reptiles and amphibians are moving towards their wintering grounds now, too.
Watch for late emerging mourning cloak and tortoiseshell butterflies in the fall. They’ll overwinter here tucked behind bark or in tree grooves. The large yellow and black butterflies are non-migrating swallowtails, often mistaken for the orange and black migrating monarchs.
Don’t miss watching the kokanee spawn on Coldstream Creek in early October. The best spawning beds for viewing are in Creekside and Coldstream Parks (behind Coldstream School). I’ve seen a sharp decline in spawning numbers. Get out there with your children and friends to enjoy this miraculous phenomena before it dies out (or can we save the kokanee?). Walk gently by the creek, and please leave your pets at home!
Fall’s a marvellous time to observe nature. Thankfully Vernon has many opportunities to enjoy it:
* Check www.ribbonsofgreen.ca for the best list of local trails;
* Join North Okanagan Naturalist Club’s Saturday morning nature hikes – www.nonc.ca;
* Join the Vernon Outdoors Club for fall hikes and cycles. www.vernonoutdoorsclub.org;
* Swan Lake Park hosts many migrating waterfowl. Watch from the observation tower;
* Lumby’s Salmon Trail and Kelowna’s Mission Creek Greenway are spectacular when the cottonwoods turn golden.
Roseanne Van Ee enthusiastically shares her knowledge of the outdoors to help readers experience and enjoy nature. Follow her on Facebook.