A number of bloggers from Opera have started the
Autumn Photo Network. This excellent idea asks bloggers from all over the world to chronicle the changing seasons. Unfortunately, the weather here in the North Downs hasn't been particularly kind to photography lately so I haven't yet contributed much, just some pictures from previous, sunnier autumns. I felt distinctly New England-ish when taking this one.
You can find my own autumn page (strictly a work in progress!)
here.

I've also put my photo of an albino squirrel gathering conkers (nuts of the horse chestnut tree) on there, but because white squirrels often excite interest I thought it perhaps worth a little extra explanation. In October 2005, a magnificent albino squirrel began to be sighted frequently in a local wooded lane. I duly went down there with my heavy tripod and my Canon DSLR, and waited, and waited, and then some...
I saw the squirrel without any trouble at all. But wildlife photography isn't simply a matter of turning up and point-and-click (well, not usually anyhow). The squirrel, albino or not, liked scaling trees, and persuading a camera to focus on the animal and not a branch in the foreground is no mean feat when you have only a few seconds before said animal decides to move again. Also, the shady environment meant slow shutter speeds, unless I compensated, which meant a huge risk of camera shake.
To cut the story short, I eventually saw the squirrel perched on a fence with a conker in his mouth, and was able to take advantage. Curiously I saw a grey squirrel in a near-identical pose on the same day. There was no aggression towards the albino from his normal-coloured kin, at least no more than is usual for this, well,
high-spirited species.

What causes albinism? It is, of course, the lack of pigment; the squirrel did not technically have white fur, just no colour at all. Melanism is the opposite and is commonly found in wolves, like this female I saw in the Rockies in 2003.

To produce offspring with either of these pigment variations, both parents must carry the relevent gene. A squirrel can
carry the albinism gene and still be grey, but if it mates with another carrier, then the kit might be white. Sadly, in zoos this leads to some very unethical practices (for example, mating closely related tigers in the hope of producing the hugely popular - if meaningless to conservation - white cubs).
But colour phases occur all over the wild quite naturally, though some populations show more tendencies than others. And seeing a natural colour phase is always exciting. Foxes are very rarely albino, but in some parts of the world are quite often melanistic. They can even be red with black chests - I did see one of those locally, many years ago. I hope I will dig up the video footage soon. In the meantime, here's another picture of the squirrel.