Full Thread: Invasive Species
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Old November 6th, 2013 #32
Alex Linder
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[letter i got]

http://www.bbc.co.uk/news/magazine-24751208

2. A population of Canada geese used to live between the two runways at Salt Lake City. Not any more, says Gib Rokich, who oversees the airport's wildlife programme, due to a system of egg addling. "The goose is scared from the nest and the eggs are addled or oiled pretty much in place by picking each egg up individually and shaking them or submerging them in vegetable oil. The goose continues to sit on them but they never have a successful hatch. If she lays 10 goslings, and five survive into adulthood, then they will want to come back to the same location to nest, so you can see how it can multiply. After four years, we broke the cycle, so we still get the occasional one but they're not established any more."