I have a couple of what look like wood pigeons crossed with something else - feral pigeons or collared doves?? Here's a pic - you'll need to zoom in! He's on the path if that helps! They waddle like woodies - not at all like feral or rock pigeons but are much faster and more nimble (and about 2/3 the size). There are two - I saw them last year too - so assume they're a breeding pair...