For this photograph to have been a popular and much sought after cliche the robin would have to be a kingfisher: Google Images positively overflows with such shots successfully captured by photographers. However, photographs of a robin on a fishing rod are also very common, and a few moments thought leads to why this is so, and why they may actually outnumber kingfishers on rods. Firstly, robins are one of the most commonly seen small perching birds in the UK (kingfishers are seen much less often). Secondly, robins often seek close proximity to people in search of titbits. And thirdly, the river bank vegetation, bushes and trees provide the kind of habitat that robins frequent.
photo © T. Boughen Camera: Lumix FZ1000 2