RE: how to find where they roost?
Like TNHagies said go to the general area where you believe the birds to be and and use an owl hooter around the dusk/dawn times and a crow call during the day.I have beaver pond near where I hunt and in the spring we have geese coming in and out all the time so I also carry a goose call with me as well. The birds gooble like crazy to the geese, and sometimes when nothing else can get them to gobble a few honks will get them.