European Starlings

What If We Had All the Birds from Shakespeare in Central Park?

According to birding lore, two of America's most invasive bird species were introduced by a misguided Shakespeare fan named Eugene Schieffelin.
A young Carcinus maenas showing the common green colour

Invasive Species: Pro And Con

Are invasive species always bad? Maybe they aren’t, according to an increasingly common point of view among ecologists.
Mute swans

Are Mute Swans a Harmful Invasive Species?

Mute swans are the poster child for a harmful species protected by strong public goodwill.