May 5th – This one has me a bit puzzled, and makes me realise how little I know about swan behaviour. This lone swan is on the decaying nest left in the disused basin by Cashmores works just off the Walsall Canal at Pleck. This nest successfully incubated and hatched at least four cygnets last season to a pair who I think are now nesting up at Bentley Bridge. The nest here is very secure from most predators – well out on the water, and humans can’t get there as it’s almost totally fenced off. 

The one thing it’s not secure from is herons, and I’m fairly sure a heron took a couple of newly hatched cygnets here last year, which may explain the pair not using this site again.

Occasionally, a single swan sits this rotting nest. I have no idea why. She – I’m assuming it’s a she – was there this evening, and seemed quite content, but there was no sign of a partner at all, and no sign of nest maintenance.

I do wonder what’s going on here.