back when we got our first looks at all the new pets for us to capture, it was quickly obvious that blizzard was following the same model that they had used with the oceanographer achievement for fishing. That one required you to catch winter squid (only available in winter) and raw summer bass (only available in summer). Now we had the snowy owl and the qiraji guardling. since it was well established with the fish that in azeroth "summer" and "winter" switched at the vernal and autumnal equinoxes, we knew when we'd be able to get our pets and thereby our achievements and zookeeper titles. right?
ummm.... maybe not.
the snowy owls didn't show up until november 1, long after september 22. well, maybe that was because they'd been delayed as part of the expansion release. but it now looks like they disappeared after february 28. this suggests that, as far as pet collecting is concerned, winter (and, one suspects, summer) are only four months long, with a two month spring and fall in between. if this is correct, then the qiraji won't begin buzzing around may 1. sorry folks.
unless, of course, blizzard is still monkeying. wouldn't be the first time.