mike mckean/park ranger, u.s. army corps of engineers: as long as there's a decent amount of ice on the river, usually viewing is pretty good. the ice just limits where the eagles can feed from, and down below the dams, that water's always churning." 10 saturday, january 16-th is the first day those eagle watching tours begin. they'll be at 9:30 in the morning and at noon... and before you head out to the island with your camera and binoculars, things to remember... reservations are recommended, because sometimes the tours fill up really fast.. and you should show up well before the tour starts. mike mckean: most public will want to enter in through the moline gate, that's where the arsenal security visitor control center is, so they'll just want to go through that protocol there, background check will be done, they'll be issued a pass, if all is well, then you're welcome to visit us." the last clock tower tour is on january 6-th at noon. but bald eagles can still be spotted from anywhere along the river." jenna: