Duck going Quackers

[Mackie n chicks]

one of my ducks 'Paddle' a white cherry valley duck of about 2 years old has been running around the garden all morning quacking - I can't find a reason! the other ducks are sleeping and all the chickens are fine but Paddle is very restless - she is very noisy and it's been hours - anyone got any ideas? Thanks Lynne

 

[lomine]

Did she maybe lay a nest somewhere in the yard and something took her eggs? Just a guess.