This is behaviour that I've noticed only once before, years ago when I watched a frog hop across the lawn, jump up to the herb bed and climb up into the Cotoneaster bush. From the purposeful way it took up its position, I assumed that this was a regular part of its hunting territory. Needless to say it's more normal to find frogs amongst vegetation or, of course, in the pond.
I don't get far with my sketch because midge-like insects are landing in hair and on my ears, despite a dousing of citronella. But the insect rush hour is no doubt the reason that frogs have positioned in the bush at this time of evening.
By the way, that phrase 'insect rush hour' comes from an article on spiders and their extraordinary uses of silk, in this month's National Geographic, Deadly Silk by Richard Conniff.
Island SuccessionWhen I started writing this diary three years ago, I often found myself referring to some wagtail or moorhen I'd seen on a bar of silt at the side of the river. I called it 'silt island'. Once a family of swans used to rest there.
By last year the bare silt was well covered by vegetation, notably Reed Grass, Pharlaris, which I often think of by its nickname 'Canal Grass'.
This summer it's more like a tropical desert island, with a dense stand of Himalayan Balsam, an introduced plant that seems to be able to cope well with exposed mud, even in places that are polluted.
Related LinkAt the time of writing spiders feature on the National Geographic Website.