Stopping several hundred seagulls fouling the Dunedin
water supply is proving difficult, the Dunedin City Council
Council water production manager Gerard McCombie said the
council had noticed seagulls were thriving at Mt Grand
reservoir in Dunedin.
''The big black-backed gulls have congregated at the
reservoir on several occasions and three weeks ago, there
were about 500 of them.''
He had never seen so many seagulls at any council reservoir.
The birds were a nuisance and fouled the black polythene on
the sides of the reservoir, but finding a solution was
proving difficult, he said.
In the past, they had put lines across reservoirs to try to
stop birds landing and had used bird-scaring guns, but both
methods were ineffective, he said.
And loud blasts from a bird scarer would be annoying to
neighbours, so other options were being explored, he said.
''... we would like to try and keep the raw water as clean as
possible before we treat it, but we do have a very good
treatment plant, which can cope with the additional faecal
A trained falcon could be used to scare the seagulls, he
''It's something we will be having a look at. We just don't
have a solution for the problem at the moment, so we are
relying on the robustness of our water treatment plant.''