"Brennan said, is the aggressive nature of the ruddy duck – the dominant male will attack any potential competitors to stop them from mating."
Sounds a bit like Liverpool on a Saturday night.
Waterfowl situation... Some alpha ducks bully smaller ducks so much when competing for mates that the beta birds' undercarriages barely take off, so to speak, a new study has found. Ducks are pretty unusual, in that some species temporarily grow their penises for the mating season, and penis shape and size is already diverse …
Having just searched, I see that according to the RSPB website, in the UK, the ruddy duck "is subject to a Government-led eradication programme. As a result, the UK population of ruddy ducks now stands at fewer than 150 individuals."
One hopes this is not /too/ much like Liverpool on a Saturday night.