Endangered butterfly found in only one spot in Alberta focus of new protection project

A new partnership between Parks Canada and the Calgary Zoo aims to protect and revitalize the population of a small, brown butterfly in Alberta's Waterton Lakes National Park.

The half-moon hairstreak, also known as the Satyrium semiluna, has beenendangered in Alberta since 2016, according to the Speciesat Risk Act.

"There's an imminent need to make sure that we don't lose them," saidAxel Moehrenschlager,director of conservation and science at the Calgary Zooon The Homestretch.

In Alberta, the butterfly is known to live only in a grassland area along theroadwayentrance to the Waterton Lakes National Park in the Blakiston Fan.

"If it spreads its wings, it's no bigger than a quarter,"Moehrenschlager said.

"These grasslands have beautiful flowers in the summer, such as silky lupine, silvery lupine, yellow buckwheat, Missouri goldenrod. And these plants are really essential for this tiny little butterfly."

The butterfliesusethese grassland for food, breeding and habitat,according to a release by Parks Canada.

The reason for their low populationin the provinceis largely due to a loss of native plants in the area, saidMoehrenschlager.

Much of the reason for this loss is due to invasive plants,the release said.

Another reason for their low numbersis the intense fluctuations in their ecosystem, said Moehrenschlager, such as thepast fires in Waterton.

It is hard to know how many of the butterflies there are across its habitats in Canada,Moehrenschlager said.

"One of the tricky things is that they really boom and bust between different years. And when they bust, they really do. Andthey've really come down in their numbers," he said.

The butterflies have habitats across Canada,nine in British Columbia and one in Waterton.

In a three-year program, Parks Canada and the Calgary Zoo plan to revitalize the population of the butterfly through measures like long-term population monitoring and the collection of genetic material.

The organizations hopeto better understand what the butterfliesneed in order to flourish be it moving the butterflies to a similar,wild location nearby or bringing in more of the butterflies from other places.

The project also intends to restore some of the butterfly's natural habitat and remove invasive plants from its main habitat, the release said.

Parks Canada will pitch in $289,000 tothe Calgary Zoo for the effort.

Moehrenschlagersaid of the several projects they are working with Parks Canada on for endangered species, this is the smallest.

"We want to treasure those spaces and those precious parks and the nature within them," saidMoehrenschlager.