Brockwell Park: "Polish" and "Wildtype" Cygnets

More and less alike in large
Extras:
Stretching cygnet

I've not been to Brockwell Park in ages, so went there in the morning to see what I could find; I entered the park a different way from usual, and was pleased to spot the Shard and central London skyline from a high-point in the park. The swans there have six juveniles/cygnets, one of which is leucistic ("Polish cygnet"); the parents carry the polymorphism, so often have pale young, but it was just one at this time. Someone by the pond mentioned that there had been two this year, but I'm not sure at what stage the other one disappeared. 

Others here (or right from Skyline view)