Commentary Header Image

Brilliant sumac keeps most herbivores at bay

By Jeff Mitton The eastern face of Flagstaff Mountain lights up each fall as clones of smooth sumac, Rhus glabra, turn brilliant red. Fall brings out the best in clonal species — quaking aspen, gambel oak, chokecherry and smooth dogwood. I hiked up the Flagstaff Mountain trail to get a closer look and found that […]

READ MORE...

Assertive camp robber earns its name

On a camping and photography trip to western Colorado, I rose before dawn to have coffee and set up for a shot of aspen at dawn. It was a glorious morning, so I kept going until noon, when I returned to camp for lunch.
Lunch was cheese and crackers, but as I started I remembered the beer in the cooler. That’s when the robber came.

READ MORE...

Sapsuckers draw a crowd eager for extra drops

Tapping in a tree attracted my attention; earlier that morning I had watched a three-toed woodpecker feeding, and I hoped this was another. But a red-naped sapsucker emerged from the trees to sit on a branch above me.

READ MORE...

CU-Boulder and the knowledge economy

Signs of strong economic growth are readily evident along the Front Range, with significant increases across many sectors of our region’s economy.

READ MORE...

Clark’s nutcrackers face lean, hard times

Field observations suggest that each nutcracker caches 30,000 limber pine seeds in late summer and fall and then recovers about 15,000 of them to get through the winter. Unrecovered seeds germinate and grow. The nutcracker effectively charges the tree one seed for the service of planting one seed.

READ MORE...