In 1949 it was thought London would never see herons, or several other bird species again. How things change. In 1968 the first pair of herons made their nest in Regent's Park. By 1970 this had increased to 10. The efforts of those who work to keep the parks green and the waterways clean plus keeping areas for the birds and wildlife free from us humans has seen the population of herons increase to its current 27 pairs.
This one was very wary of me while at the same time wanting to know if there might be a tasty morsel in my bag. A camera was not appreciated.