October 20th – Heading home along the canal through Pleck, another of those rare treats: a rainbow.
It hadn’t rained here that I was aware of and I guess someone in east Walsall was getting an unexpected shower.
Hadn’t seen any for ages, and this is the third this month. You can’t beat a good rainbow.
February 1st – This swan had me concerned for a bit. Sat on the frozen canal near james Bridge in Darlaston, as if he were trapped (I’m assuming it’s a he, how do you sex a swan?) I watched him for a while, fearing a stuck bird. As I started to whistle, he got to his feet, leaving small, melted imprints in the frozen canal surface.
Birds seem able to be in contact with ice like this for indefinite periods, without their feet freezing because they have a very interesting feature in their blood circulation systems. At the top of their legs, the small amount of blood that flows to the legs and feet flows through a sort of ‘heat exchanger’ which removes heat from the outgoing blood and transfers it to the blood flowing back. Together with few nerves actually in the limbs, birds like these can stand for hours on ice with no ill effects and little energy consumption. All achieved through the magic of nature’s engineering hand, evolution. It surely is a wonder.
January 23rd – Heading to Darlaston today, I ducked onto the canal as usual. I noted that the algae bloom that I speculated would be killed off by the cold spell was still apparently in rude health… last week, this spot was iced over. Today, the gloop is as thick and green as ever. It does move around, though. On windy days it disperses to little clumps at the banks and reed-beds. When conditions are more still, it regroups. Oddly hardy stuff, it would appear. Still none the wiser as to what it actually is.
BrownhillsBob's #365daysofbiking 