Spreading the Word

Here’s a clip of my recent appearance on WCVB-TV’s Chronicle, once again trying to spread the word about the problem of invasive alien species. When I say that, I know most people think of UFOs and little green men. Producer Ernie Sarro even leavened this...

Walden Biodiversity Day

On July 3rd and 4th I’ll be leading the second Walden Biodiversity Day, a gathering of top naturalists and field biologists — many of whom participated in the first Biodiversity Day in 1998 — who will fan out to find, identify and photograph over a thousand...

When Birds Go Bad

As reported by the Wall Street Journal: a tiny blackbird has been tormenting pedestrians in the heart of San Francisco’s financial district, guarding his nest in a behavior called “mobbing.” But has this bird gone bad or is he just getting back at...