Once there were billions

JAC: Yesterday I mentioned that today is an anniversary of note. I forgot that it was the 75th anniversary of the invasion of Poland by the Germans, and thus the beginning of World War II. But it’s also a biological anniversary, and Greg has volunteered to tell us about that one: by Greg Mayer Exactly […]

House cats as predators

by Greg Mayer It’s long been known that house cats, which are introduced to most of the places they occur (the wild members of the species are found in Europe, North Africa, and western Asia), can wreak havoc on native wildlife, perhaps the most infamous case being that of the Stephens Island Wren (Xenicus lyalli). […]

Extinct frog rediscovered– sort of

by Greg Mayer Since I first read about them when I was about 12 years old, I’ve been intrigued by the somewhat mysterious Vegas Valley leopard frogs. Known from a handful of springs, all in what is now more or less metropolitan Las Vegas, they had disappeared before the middle of the 20th century, and […]

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