Butterfly Concerns

by Pat Jaquith
pat@westvalleynaturalists.org


Nymphalis antiopa (Mourning Cloak Butterfly), the Montana State Butterfly

The sight of a Mourning Cloak butterfly is a sure sign of spring to me! In late fall, they crawl behind loose bark on a tree where they increase the level of glycerol in their blood, convert excess water in their bodies into a gelatin-like substance that doesn’t freeze, and spend the winter. As spring warmth arrives, they reverse those properties and start flying sooner than many others! Many butterflies endure the winter as eggs, caterpillars, or in a chrysalis. A few, like Monarchs, migrate to warmer climates.

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Rough-Legged Hawks are Winter Residents

by Pat Jaquith
pat@westvalleynaturalists.org

Rough-legged hawk profile 9.10.

It’s fall already; raptor fans have been counting the migrating raptors at various mountain top sites for a few weeks, and I’m already noticing fewer soaring birds in the West Valley. Any day we may see Rough-legged Hawks that have migrated thousands of miles to call this home for the winter.

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Birds and Berries


by Pat Jaquith
pat@westvalleynaturalists.org

In spring and summer when birds are nesting and raising young, insects are prominent in their diets. The young fledge, and their diets tend more toward fruit, berries, and other high energy foods to fuel their needs for warmth if they’re staying here or energy for migrating.

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Goldenrod Crab Spiders

by Pat Jaquith
pat@westvalleynaturalists.org

People who look closely at flowers may also see a variety of insects. Pollinators’ visits are self-serving: they are attracted to the flowers for the nectar or pollen they can collect for food. Only incidentally do they provide the service of pollination. Crab Goldenrod Spiders (named for the flower where they are frequently observed) visit flowers to seek nourishment by preying on the pollinators.

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