Sighting for June 4, 2022

Brian McGurgan

Chugach State Park, Flattop Mountain (61.10299° N, 149.68182° W)
Anchorage Municipality, AK

Sunny with a light breeze at 74° from 12:25 to 4:20pm, cooler and with occasional gusts at higher elevation. Most snow has now melted from the trail towards Flattop Mountain, although the mountain itself still has a lot of snow on the north-facing slopes and in shaded places. I hiked up Blueberry Knoll (elevation of 2,618 feet) below the mountain and spent my time on its slopes and craggy ridges. It was a pleasure to be above the tree line with alpine wildflowers and hill-topping butterflies. Conservative counts recorded for all species observed. The Old World Swallowtails were especially aggressive in chasing off any insects and other butterflies, especially the Western Whites which were hyperactively patrolling the ridge. A swallowtail flew at me several times as if to drive me away, but then resumed aerial combat with the others. Arctic Blues were seen roaming all over the slopes of the Knoll staying close to the ground and at low densities.

  • Old World Swallowtail 4
  • Western White 3
  • Mustard White 4
  • Greenish Blue 2
  • Arctic Blue common
  • Mormon Fritillary 4
  • Freija Fritillary 6
  • Milbert's Tortoiseshell 2

Western White

Old World Swallowtail

Old World Swallowtail

Mormon Fritillary

Greenish Blue

Freija Fritillary

Arctic Blue

Arctic Blue