I recently bought 3 Aylesbury ducklings, however they weren't sexed when I bought them. They have settled into their new home now, however I bought them at the Devon County Show, so am not sure how old they are or what sex they are.
They are starting to turn white, and are probably around 20cm high; what age would you put them at?
Also, sexing them, should I use the vent method or just wait until they are old enough for me to see for myself?
Thanks