Tag: Chatfield State Park

It’s hard to believe Walden Ponds Wildlife Habitat used to be a gravel pit.

These days, the 100-acre refuge, at 5201 St. Vrain Road in Boulder County, attracts plenty of wildlife, including a large number of migrating birds that come for five on-site ponds knit together with 2.9 miles of flat, scenic trail.

Even on a cold December morning, it’s worth bundling up to see what’s fluttering through the reclaimed wetlands. Not far from Longmont’s municipal airport, Pella Crossing, a mile south of Hygiene, on the east side of North 75th Street, delivers a similar scene – industrial strip mines transformed into a peaceful haven.

Feeling unseasonably hopeful, I once took my young kids birding at Walden Ponds. The hobby requires a certain level of patience and quiet – not exactly our family’s strong suits. Despite near-constant reminders, my offspring produce their own special calls: a cacophonous blend of screeches, giggles, and bickering that clears a marsh faster than you can say :white-tailed Ptarmigan.” Still, after scattering every sparrow in sight, we caught an unexpected break on the drive out.

“Look,” my husband said, pulling over near Wally Toevs Pond. There were two golden eagles perched on a utility pole, primary feathers ruffling in the cold breeze. I fumbled for my phone, snapped a terrible, zoomed-in photo, and then, finally, we all fell silent.

Car birding

When I told lifelong Colorado birder Peter Burke about this, he wasn’t remotely surprised: “Golden eagles,” he explains, “like to nest on cliffs in the mountains, but they come down here for the winter and often perch on telephone poles while hunting prairie dogs.”

Burke, who founded the guide company Rocky Mountain Birding and currently edits the quarterly journal Colorado Birds, approved of our drive-by-birding technique. In fact, car birding is one of his go-to strategies.

You’re less likely to flush a bird this way. “Humans have the profile of a predator,” he notes. But cars? They’re more like big, slow cows – not particularly threatening.

As a bonus, you’ll be warm in your car on a chilly day. The main message I got when I called up a handful of Colorado’s expert birders is that you truly don’t have to travel far from Denver, especially once the temperature drops.

For some species, we’re south

As Jacob Job from Bird Conservancy of the Rockies puts it, “Winter birding is often overlooked.” That’s a shame because we get a whole new influx of species this time of year. (And it’s worth noting that as milder winters caused by climate change reshape migration patterns, some birds are sticking it out: mountain bluebirds, for instance, can now be spotted here all year long.)

We have an image of migratory birds flying south for the winter, but Colorado’s Front Range is south for many species, including raptors, cackling geese (a close cousin to the Canada goose), and rough-legged hawks, which breed in tundra way above the Arctic Circle then vacation in sunny Colorado. Other birds have an elevational migration within the Centennial State. Northern pigmy owls, for example, propagate in the mountains before coming to the foothills.

This time of year, Colorado birders are primarily searching for raptors, waterfowl and sparrows. Where you go will largely depend on what you’re hoping to spot, explains Burke.