Thursday, Sept. 10
Southwestern Idaho Birding Association: 7 p.m. at Deer Flat National Wildlife Refuge visitors center, 13751 Upper Embankment Road, Nampa. Bob Christensen, a retired biologist, will present his findings on the bald eagle nesting attempts at Deer Flat.
Saturday, Sept. 12
Cascade Gravel Grinder Challenge: 8 a.m. to 5 p.m. at American Legion Post 60, 105 E. Mill St., Cascade. Options: 35-, 57- and 76-mile rides. Mountain and cross bikes are acceptable. 4summitchallenge.com/gravelgrinder.
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Fall Vintage Show, Swap Meet and Snowmobile Expo: 10 a.m. to 4 p.m. next to the Mountain Village off Idaho 21, Stanley. Free. (208) 590-0954, wsvsa.com.
Cascade Lake 4H Camp 50 Years of Camping Adventures Fundraiser: 5 to 8 p.m. at Mallard Park, 15203 S. 10th Ave., Caldwell. $15 per person or $45 for family. cascadelake4hcamp.com.
Saturday-Sunday, Sept. 12-13
Traditional and Tactical Knife Show: 10 a.m. to 6 p.m. Sept. 12 and 10 a.m. to 3 p.m. Sept. 13 at Courtyard by Marriott, 1789 S. Eagle Road, Meridian. $5 admission, $12 per family. idahoknife.com.
Sunday, Sept. 13
Family Birding Walk: 9 to 11 a.m. at Hyatt Hidden Lake Reserve, 5301 N. Maple Grove Road, Boise (lower parking lot). Alex Takasugi, 484-9132 or firstname.lastname@example.org.
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