Natterjack Toad

[Flex24]

Have I heard a natterjack toad? I am currently working at the Isle of Grain(Kent) Gas storage site. There are environmental areas where Great crested newts and natterjack toads have been found. Last week I was distracted from what I was doing by a suprisingly loud sound that I can only describe as a bad attempt at donald duck that went Wah-Wah-Wah. Yes this does sound like I'm being woundup but am fairly sure it isnt. Sound level was on a par with how they use warning cries at airports to scare off birds.
So...can Natterjacks sound like a duck?? They are loud but only recording Ive heard sounds like....well a toad!
Unfortunately I cannot record the sound and I could not see anything. The only birds I see are gulls and sparrows.Area was dense undergrowth leading down to largish shallow water(not a river) with reeds.
Any ideas??

[GuyF]

Hi Flex,
You could try listening to recordings of Marsh Frogs, they are quite widespread in Kent and although I've never heard them personally, they are apparently very noisy!
Guy