1990: Wallace Lake (NSW). Chlorpyrifos residues in eggs.

 

In 1990, opportunistic sampling found Chlorpyrifos in three eggs of the Little Terns (0.06-0.36ppm), in a liver sample from Little Terns (0.02ppm) and in a Pelican egg (0.5ppm) from the Wallace Lake colony on the central coast of NSW

https://ntn.org.au/wp/wp-content/uploads/2010/02/polluterpaysmythlegend.pdf