Following the recent suspected outbreak of avian botulism at Rye Harbour Nature Reserve, infected birds have also been found around the River Brede according to RSPCA Mallydams.
Avian botulism is caused by a toxin produced by a bacterium, released during warmer weather and when dry conditions reduce water levels. The toxins affect the nervous system of birds resulting in the paralysis of legs, wings and necks of birds so that they are unable to stand, walk or fly. It poses little risk to humans, but dogs can become seriously ill if they eat an infected bird or drink from contaminated water.
Over the past week 320 dead birds have been collected around Castle Water at the nature reserve by staff and volunteers dressed in protective clothing. Species collected include ducks, swans, lapwing, cormorants, grey lag geese, oyster catchers and coot amongst others.
Samples have been supplied to the Animal and Plant Health Agency (APHA) for testing, to confirm whether avian botulism is the cause of this outbreak. The results will be shared by the SWT when they obtain them.
Removing and disposing of the dead birds quickly is essential to reduce the spread of the toxins through the food chain and to break the cycle of infection.
RSPCA Mallydams is caring for birds rescued with a specialist team providing intensive treatment and care, flushing the toxins from the birds’ systems.
Castle Water remains closed and visitors to the reserve can help to protect wildlife by keeping dogs out of the water, and on a lead at all times. People should avoid contact with water and never touch sick, injured or dead animals. The Discovery Centre and south-eastern part of the reserve are open but dogs must be kept on leads and out of the water.
Dead birds should be reported to the DEFRA helpline on 0345 933 5577.
Image Credits: Dav Bridger/Sussex Wildlife Trust , Sussex Wildlife Trust .