Time: 2017-04-02 9:34-11:10 Partners: Hui Lin, Shaowei Zhai, Song Yang. Location: Lion’s Den Gorge Nature Preserve. 511 High Bluff Dr, Grafton, WI 53201 Species: American Robin, American Tree Sparrow, Black-capped Chickadee, Canada Goose, Downy Woodpecker, Red-winged Blackbird