Grey Heron (again)

I like the intensity in the eyes of herons. Thier eyes never seem to miss a trick. Constantly on the lookout for frogs etc they stare at water for haours on end.
I know I blipped a similar bird a few days ago but I'm very busy today. I'm actually calculating how much blood can be taken out of a stone. I have to fill in a tax return every year even tho I'm retired (ages ago) and if I get it wrong (which I did last year although only by £9.98) the tax man still seems to know how much income I've had so I see the exercise as pointless.
Similar things herons and tax men they both prey on things smaller than themselves and never miss a trick!!