Yes. We've been working since 1993. It is getting close to 20 years that we have been conducting this work.
Part of our work has been assessing how well some of these programs have worked in acting as habitat. Indeed the area, because of the high-quality adjacent tidal marsh habitat, has a lot of wildlife using it. But with the advent of these programs, we've actually seen the use of the fields increase. We've measured that using various methods.
We've looked at waterfowl use of farm fields. Generally, farm fields are good habitat for waterfowl. But we've seen them move into the cover crop fields that we've established, use them during their fall migration periods as well as during the wintering periods, and then again in spring migration.
We have some somewhat cursory evidence that some shorebirds also benefit from certain types of cover crop fields. Some of our work has really showed the value of these grassland set-aside fields to wintering raptors. So we've measured the abundance of small mammal prey on the landscape and compared that with other non-set-aside fields, fields that aren't being managed for wildlife. Indeed, the number of small mammal prey is higher in those managed fields, and the corresponding number of raptors, which we're targeting for this conservation, is higher as well.
I'll just point out that we directly target four of the species listed under the Species at Risk Act for conservation through that set-aside program.