Where to catch a glimpse of a mountain bluebird in Alberta this spring

It's an ideal time of year to spot a mountain bluebird in Alberta, and if you've never caught a glimpse of one, birdwatchers are willing to let you in on a secret.

Along a stretch of Plummers Road, which isabout 50 kilometres southwest of Calgary, there are dozens of nest boxes where mountain bluebirds now make their homes.

It was one of the firstbluebird trails in the province. Itwas started by Calgarians Don and Andrew Stiles, a father-and-son duo with a passion for birding who first began buildingthe boxes over 40 years ago.

The bluebirds on the trail are now nesting, which meansthe fathers will be guarding the birdhouses, the mothers will be coming and going on rare breaks from incubation, and lucky birdwatchers are in for a treat.

"It's basically like looking at the sky, it's one of our most stunning birds," Andrew told the Calgary Eyeopener on Thursday. "It's a work of art."

Immediate intrigue

Andrew's interest in birdingsparked when his father, Don, signed him up for a birdwatching course at the Inglewood Bird Sanctuary in the 1970s.

A naturalist at the course displayed a huge pile of birdhouses, and explained they would be used to try to increase the population of the mountain bluebird.

The small, sky-blue members of the thrush family are native to Alberta and are described as lookers not singers.

And although the birdshad ample fields for grasshopper-hunting, Andrew said naturalists suspected their low numbers in the province could be attributed to a missing piece: nesting habitats.

Starlings and house sparrows had taken over many of the old woodpecker holes bluebirds would normally frequent, and so the houses were built as substitutes.

"I was immediately intrigued.I said, 'Count me in, I will build 50!'" Andrew said.

"We put some up on Plummers Road, and to my surprise the bluebird population started very slowly increasing."

A huge difference

The project first consisted50 birdhouses in the Calgary area, and about 20 on Plummers Road.

The first year, the housesattracted a single bluebird, Andrew said.The next year, two families moved in.

Today, the grassroots conservation effortincludes volunteers known as the Calgary Area Nest Box Monitors Society. The societyhelps to oversee 5,000 of the birdhouses along back roadsacrossAlberta.

Andrew says about 20 per cent of them are occupied every nesting season.

"There's no doubt that the nesting habitat of those birdhouses has made a huge difference," Andrew said.

BirdwatcherswhoventuretoPlummers Road or the foothillslooking toscout a bluebird shouldkeep a reasonable distance, but enjoy them, Andrew said. It's his favourite bird, and a harbinger of spring.

As for what Andrew is up to this weekend, that's a no-brainer.

"I'm going out with my dad this weekend to check our birdhouses."

• Listen to the full interview on the Calgary Eyeopener below:

With files from the Calgary Eyeopener.