Noisy, showy cardinals reproducing more thanks to your birdseed

Boredom-busting backyard bird feedershave boosted the already growing cardinal population in Ottawa during the COVID-19 pandemic, according to local birders.

Local bird counts show the population of northern cardinalsor in unimaginative Latin nomenclature, Cardinalis cardinaliswas already rising before the pandemic hit.

Then isolated families began sprucing up their backyards for themselvesand for hungry birds looking for an easy meal.

"More people were feeding birds last winter," said Ottawa naturalist Michael Runtz. "Costco was being sold out of sunflower seeds regularly, and that's unusual.

"If the females are well-fed, they produce more eggsand ... more young."

Bird feeders are why cardinals came toOttawa in the first place, according to Runtz, who saidthe showy, non-migratory birds arrived in the 1940s and 1950s and survived Canadian winters thanks to full bellies.

Theannual Christmas bird count, where volunteers report the number and species of birds they spot on a given dayin a specific region,notched its first northern cardinal sighting in 1965.

By 1994, 226 were counted; by 2019, the countwas592.

Runtz credited acombination of climate change and food availability for the bird's expanding habitat.

Cardinal populations can grow quickly with more than one clutch of young in a season, which is why you'll hear males showing off their pipes deeper into the season, looking for asecond date.

"Birdsong is one reason that females choose males as mates, based on how well they sing," said Runtz.

'Life' in your own backyard

Ottawa's Marc Lachance,an avid amateur bird photographer, has noticed an uptick in cardinals through his living room window in the McKellar Park neighbourhood.

"I've lived in Ottawa since 1985, and at that time, there were almost no cardinals," said Lachance, a newly retired statistician.

Lachance says he stocks his backyard bird feederswith cardinals' favourites: sunflower chips and safflower seeds the latter of which squirrels do not like.

Lachance hasspotted the males bringing seeds to the females, as if to show them they'd be good providers, as an enticement to mate and set up a nest.

One of his favourite photographs shows a beak-to-beak delivery of seeds, which looks like the birds are exchanging "aFrench kiss," said Lachance.

"The pandemic has made me realize how much life I have in my own backyard," he said.