Saturday. Find out who’s “president” of the dinosaurs at the Rocky Mountain Dinosaur Resource Center in Woodland Park. Puppeteer and storyteller Cathy Kelsay presents a special President’s Day performance for kids, with songs, silly outfits and other dino diversions. Before and after the show, tour the RMDRC’s awesome exhibits: More than 30 full skeletons, including a 40-foot Tyrannosaurus rex, plus a working paleontology lab and free guided tours. 1:30 p.m. Saturday. Rocky Mountain Dinosaur Resource Center, 201 S. Fairview St., Woodland Park; 719-686-1820. Admission is $11.50 for adults, $10.50 for seniors age 65 and older, $7.50 for kids ages 5 to 12. Children age 4 and younger are free. For more information, visit rmdrc.com.

Through Monday. Bird watchers across the country unite for the Great Backyard Bird Count, starting today and running through Monday. Anyone can join the feathered fun: Just watch your surroundings carefully for at least 15 minutes, take note of the birds you spot and submit your findings to the count. (Full instructions and a checklist are available at birdsource.org) Need a tutorial? The Audubon Society of Greater Denver hosts a GBBC celebration on Saturday at its Nature Center. Learn how to particapate in the count and the best ways to attract birds to your yard. Kids can make a birdfeeder to take home, too. 10 a.m. to 2 p.m. Saturday. Audubon Nature Center at Chatfield, just east of Waterton Road and Wadsworth Boulevard, Littleton. Classes are free for members, $5 for nonmembers. Learn more at birdsource.org, denveraudubon.com or call 303-973-9530.

Tuesday. Little ones learn about keeping (musical) time at the next edition of “Tiny Tots Love Music.” Performed by members of the Denver Brass, “Rhythm and Beat” introduces youngsters to the basic structures of rhythm. As always, the kid-friendly show encourages participation and “active listening”—this won’t be an hour of squirmy sitting. The next Tiny Tots performance is “Elements of Music” on Feb. 26 in Highlands Ranch. 10:15 a.m. Tuesday. Peace Lutheran Church, 5675 Field St., Arvada. General admission is $8; kids age 4 and younger are $5. Visit denverbrass.org for more information.

Through April 10. Discover the “Treasures of NOAA’s Ark,” the latest exhibit at the Boulder History Museum. Featuring artifacts from the National Oceanic and Atmospheric Administration, the exhibit explores the history of the agency from its 19th-century roots to today. Pore over old maps and ponder antiquated instruments used in NOAA’s early days, and learn about its local connection at Boulder’s Earth Systems Research Laboratory. 10 a.m. to 5 p.m. Tuesdays through Fridays, noon to 4 p.m. Saturdays and Sundays. Closed Mondays. Boulder History Museum, 1206 Euclid Ave., Boulder; 303-449-3464. Admission is $6 for adults, $4 for seniors, $3 for children and students. Learn more at boulderhistorymuseum.org.

March 4-5. Catch a glimpse of the Children’s Museum of Denver after dark at the museum’s Sleepover Fundraiser. Registration for the event is open until Feb. 25 and includes dinner, a behind-the-scenes tour, a bedtime movie and breakfast the next morning. Get the run of the place after the doors have closed and make your bed inside an anthill, or on a lily pad, or wherever you fancy. Ticket prices are steep, but hey, it’s a fundraiser. 6:30 p.m. Friday to 10 a.m. Saturday. Children’s Museum of Denver, 2121 Children’s Museum Drive; 303-433-7444. Tickets are $50 per person. Reservations are required; call 303-561-0104 or email lisaa@cmdenver.org to register. For more information, visit mychildsmuseum.org.

Kathleen St. John