Canada Goose Population Control
The ever-increasing numbers of
Large flocks of geese certainly have undesirable effects upon parks and local ecosystems. Excrement left on lawns and playing fields gets the most attention, but the geese can also wreak havoc on worthy goals like marsh or meadow restoration. The question, then, is what to do about it.
Contraceptives (or oiling of eggs) is probably preferable to the more "explosive" options. Dogs may disturb other nesting birds, and pyrotechnics affect all animals, not just the geese. Officials in
The active ingredient Nicarbazin does not build up in the bodily tissue of birds, dropping to undetectable levels five days after consumption, according to the Food and Drug Administration's Web site.
geese breed earlier than most other birds, other species who eat treated bait should not be affected, developers say.... Canada
A previous avian birth-control compound, Ornitrol, was pulled from the market in 1994 because it had adverse effects on non-target species, Wolf said.
The failure of the previous contraceptive should be cause for worry. Other birds will eat the bait provided. The newly-separated cackling goose seems particularly vulnerable to harm from this contraceptive program. The EPA ought to take the effects upon the various subspecies of
Whatever the merits of the contraceptive program, as well as more disruptive programs, in the final analysis the surge in goose population is the problem brought on by human manipulation. Parks, lawns, and artifical ponds provide geese with attractive resting and breeding grounds. No amount of tinkering with reproductive systems will change this, so it appears to me that the population of