Paper Wasps and Butterflies

eruopean-paper-wasp__butterflypavilion-co_lah_9129Aliens have invaded Colorado. Once again, a non-native species has moved into our territory and established a thriving population. In this case, it’s the European Paper Wasp (left). You can read all about it at the Colorado State University Extension website.

In this case, having this new insect in town is a mixed blessing. Although they look a lot like a yellow-jacket, European Paper Wasps aren’t aggressive; they can sting, but they seldom do. On the down side, they’ve been known to go after the sweet juices of ripe fruit such as cherries, and pose a threat to the orchards on the Western Slope.

(more…)

A Second Opinon on Invasive Species

I recently read a confounding article on Garden Rant (a gardening blog like no other). The author was reporting on some new research suggesting that not all invasive species should be eradicated.

lonicera-honeysuckle-dbg-19sept05-lah-250-1Specifically, a Penn State biologist named Tomas Carlo studied Japanese Honeysuckle (considered a noxious weed in much of the eastern US) and found that its presence increased the biodiversity of bird species as well as the number of individual birds. In fact, the fall berries are a major source of food for fruit-eating birds.

(more…)

Lumpers and Splitters

Scrub Jay_TurkeyCreek-FtCarson-CO_LAH_9808From the big questions (how many species of birds are there?) to specifics (should the Bullock’s Oriole and the Baltimore Oriole be merged into one species called the Northern Oriole?), birders have long endured a bit of confusion. It seems even the most eminent ornithologists disagree on these and similar conundrums.

In 1946, a paper published by Ernst Mayr asserted that there were  8,616 species of  bird worldwide. Today, the consensus is that there are closer to 10,000 although estimates vary widely. What happened?

In 1973, scientists decided that the two most common American orioles, the Bullock’s Oriole in the west and the Baltimore Oriole in the east, were really the same bird. Where their ranges overlapped, they mated and produced fertile young. Then, in 1995, the two species were separated again! Why?

(more…)

Eleven Reasons I Love Birding in Colorado

boreas-pass-tarryall-2008jun07-lah-110I recently posted my ten favorite reasons to garden in Colorado. This got me to thinking about how much I love birding here too. It’s true, we’re not a Cape May, Monterey, or Rio Grande Valley, but 493 species of birds have been sighted here. Only six states* have more.

Having a lot of birds to see is certainly a good reason to bird in Colorado, but it’s not the only one. Since today is 11/11, I’m posting ten more reasons I’m thankful that I can bird here, bringing the total to… eleven! (more…)