don't feed ducks in Summer.

http://www.stuff.co.nz/auckland/local-news/central-leader/89477343/dead-ducks-discovered-in-sandringham-waterway

https://resources.stuff.co.nz/content/dam/images/1/h/9/s/g/s

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Dead ducks discovered in Sandringham waterway

JAMES PASLEY

Last updated 15:54, February 21 2017

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JAMES PASLEY/FAIRFAX NZ

Sandringham resident John McCaffery says ducks are dying near Kerr-Taylor Park due to botulism.

Residents want answers after discovering a flock of dead ducks floating in their local reserve's waterway.
Sandringham resident John McCaffery said he discovered about 20 duck corpses following heavy rain two and a half weeks ago.
McCaffery said he believed the ducks died due to botulism, a fatal disease that can originate from spores found in soil and water.
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