In a report this week, local biologist, Dr June Chatfield, said that a party of volunteers from the Alton Society and the Hampshire Wildlife Trust had rowed across to the large island and treated more than 40 goose eggs.
The eggs were immersed in liquid paraffin which blocks the air holes and prevents further development. The geese, however, continue to sit on the nests and will not re-lay while the oiled eggs remain.
Dr Chatfield explained that geese steadily accumulate eggs in the nest over time and the egg control needs to be carefully timed to co-ordinate with completion of the clutches.
"One nest had only two eggs, so it is likely that another four remain inside the female goose and these may result in a few goslings this year," said Dr Chatfield.
Nonetheless, she pointed out that, as in many other amenity lakes, King's Pond is currently suffering from an excessively large population of introduced Canada geese which is upsetting the balance of the habitat.
"Up to 30 stay in the breeding season while up to 200 have appeared from outside in autumn and winter. This year there have been eight nests on the island," she said.
After much research during the past year by Dr Chatfield, Alton Town Council obtained a licence from the Department of the Environment (DETR) to carry out a programme of egg control to limit the reproduction of Canada Geese.
In addition, it is reported that some tree clearance was undertaken by the Environment Agency earlier in the year to let more light on to the large island.
Further conservation work is also planned on the island edging, but planting of a reed bed has been delayed due to the exceptionally adverse weather, high water levels and the consequent increase of urgent work elsewhere by the agency.