Could I just I very quickly add to that response?
Let's use the Point Pelee example where we have a species called the tiger salamander. It's not been seen in the park since 1919. We produced a very brief, succinct report and it recommends that it would not be successful in terms of recovering that species so we didn't spend any more money on that.
Another example would be the prickly pear cactus. It's a listed species within the legislation. It was one that was reviewed by COSEWIC, yet, as you pointed out in your example, across Lake Erie in the State of Ohio it is considered a weed. We're not spending any more money in terms of helping it recover because it is at the limit of its range. We are spending money on the priority species that we feel have a good chance of recovery.