Archive for February 8th, 2005

So far, our avifaunalist in Iraq, LTC Bob, has spotted a number of birds, though–unsurprisingly, as I can well attest–seeing them is a lot easier than snapping a picture of them.

We?ve definitely seen the White Wagtail and Red Wattled Lapwing ? also two kinds of kingfishers, cormorants and something that I am calling a coot till I figure out exactly what it is; the usual magpies and so forth….Also saw a big heron, but couldn?t get close enough for a picture. Am considering getting a better camera ? I may bite the bullet and get a digital SLR, my little Olympus doesn?t have much of a zoom for getting bird pics.

A tripod also comes in handy as well, is my experience, though I suspect the handiest tool one could have when attempting to compose a decent bird picture is a shotgun. It certainly worked for Audubon.

The picture above, of a White-cheeked Bulbul perched in an acacia tree, is the second LTC Bob sent us. As before, I’ve cropped out the vast majority of the rest of the image, so let me know if you have a strong yearning to see a winter-blasted Iraqi acacia, and I’ll email it to you. Here’s another view of a White-cheeked Bulbul, from Dubai. I attribute the shrunken nature of the white cheek patch in LTC Bob’s photo to the bird being hunched up against the cold.

As with the Mesopotamian crow, the bulbul above is probably a subspecies local to the area, Pycnonotus leucotis mesopotamiae, in this case, rather than a purebred Pycnonotus leucogenys. Unlike the Mesopotamian crow–at least so far as is known–P.l. mesopotamiae will willingly breed with other species of bulbul.

My most fascinating expatriate visitors have been a pair of Red-vented Bulbuls (Pycnonotus cafer), already resident on my arrival….In my first summer they produced one offspring and while the mother continued to look after the juvenile, the male mated again with a White-Cheeked Bulbul (Pycnonotus lencogenys mesopotamiae), a species normally resident in the area. This latter Bulbul appeared to have lost its white-cheeked mate which I had earlier seen collecting food. Two hybrids resulted, one a White-cheeked Bulbul that the following year mated with a Common Bulbul. These hybrids were the first I had seen in Dubai though I had seen them further north and on the East Coast. The m?nage a trois continued and the same mating pattern the second summer produced another purebred Red-vented and some more hybrids.

If true, this would argue that the Red-Vented and White-Cheeked bulbuls are not separate species at all, rather that they are both subtypes of the same species in that they do not fit the recently-deceased Ernst Mayr’s definition of a species;

“a species is a group of interbreeding natural populations that is reproductively isolated from other such groups.”

If the offspring of the Red-Vented and White-Cheeked bulbuls were able to breed successfully, then they were not reproductively isolated, meaning that the differences in their outward appearances are evidence of natural color variation within a single species rather than evidence of multiple species. As interesting as it may be, however, the passage above can only be considered only anecdotal evidence at best.

However, there is a precedent for combining multiple species into one. Up until 1973, the five color variations of Dark-eyed Junco in North America were all thought to be different species, so the Red-Vented and White-Cheeked bulbuls may one day be lumped together as well.

Won’t that be exciting?

Previously: The Mesopotamian Crow.
Next: The White-Tailed Plover

We’re less than five days away from the Triangle Bloggers Conference 2005, which over 100 bloggers have signed up for so far. Sign up if you can make it.

Coturnix and I will be having a beer at the award-winning Top of the Hill afterwards. Feel free to join us.

Working from home today. Took advantage of that fact to drop off the Explorer for a brake job, and to install a new chat client on one of the elderly desktops.

I had been running AOL’s Instant Messenger on it, but there was a vulnerability somewhere in program–even in the latest versions–that was repeatedly inroducing the W32.Randex virus to the system. My anti-virus software was uptodate, so the bug wasn’t getting anywhere one it landed, and a visit to Shields Up verified that I didn’t have any untoward ports open, but it was annoying nonethless.

I finally traced the problem to AIM by running a virus check every few hours, first with every program I normally use other than AIM running, then with AIM alone running. Days went by with no infection attempts in the first case, yet literally almost as soon as I opened up AIM, up popped a quarantine notice. I’d cleanse and restart, and at least one new attempt would trigger the anti-virus software over the next couple of hours.

Why only one box out of the three occasionally running AIM on my local network was targeted, I don’t know, though admittedly it was the one where AIM was most likely to be running at any particular time. In any case, I’ve since replaced it with Trillian, which not only will connect to both AIM and the Yahoo chat client, but promises to be virus-free.

So far, so good. Better than I can say for the Explorer, which just added $700 in brake repair to the House Hraka debt load.