Bug Squad

There's an old saying applicable to child-rearing: "First you give them roots, and then you give them wings." Roots. Wings. Roots to ground them, to love them unconditionally. And wings for them to lift off and launch new beginnings.

When UC Regents scholar Heather Wilson, a junior specialist in the Frank Zalom lab, UC Davis Department of Entomology and Nematology, entered the 2011 Entomological Society of America's video contest, she drew a lot of fans--and a couple of marriage proposals.

Two icons, the American flag and the monarch butterfly, are flying high today. The American flag, or "Old Glory," symbolizes our democracy. The 13 stripes represent the 13 colonies that declared--and won--independence from Great Britain. The 50 stars in the field of blue denote our 50 states.

What a delight to see. We strolled through milkweed patches in the UC Davis Arboretum Thursday noon and saw them. Monarchs! The monarch butterflies (Danaus plexippus) are returning from their coastal California overwintering sites. And we're getting new generations.

Did you know that monarch butterflies use a circadian clock to navigate to their overwintering sites during their seasonal long-distance migration? Yes, they do, says a Texas A&M researcher.