1. Arbor Day Gulfport: Join the city of Gulfport to plant a tree. Then, pick up a free sabal palm or sweet gum seedling to take home, while supplies last. Masks are required for the tree-planting ceremony at 3:45 p.m. Friday. Free. 4526 29th Ave. S, Gulfport. 2. Train Show: Kids can check out a running train layout as vendors sell model trains in various gauges and other die-cast toys. $5, 12 and younger free. 9 a.m.-2 p.m. Saturday. Hernando County Fairgrounds, 6436 Broad St., Brooksville. 727-244-1341. 3. Unleash the Beast: The Professional Bull Riders association would normally hold a big show at Amalie Arena in Tampa, but COVID-19 sidelined its season last year. This year it will open the 2021 season in Ocala with 30 of the top bull riders in the world. Each rider takes on a bull in round one. The top 12 advance to the championship round. The arena will only be sold to 50 percent capacity with seating in every other row. Social distancing and masks are required at concession stands and in restrooms. $50, $15 ages 5-12, 4 and younger free. 2 p.m. Saturday-Sunday. Southeastern Livestock Pavilion, 2232 NE Jacksonville Road, Ocala. 800-732-1727. 4. Birds of Prey: In addition to its regular exhibits, the Clearwater Marine Aquarium will have stations set up to learn all about Florida raptors including owls and hawks. Included with admission. 10 a.m.-5 p.m. Saturday through Monday. 249 Windward Passage, Clearwater. 727-441-1790. cmaquarium.org . 5. How to Use Your Telescope: Did you get a telescope for Christmas? Bring a telescope and experts will show you how to properly set it up, adjust it and view stars and planets through it. $30-$35. 4:30-6 p.m. Saturday. Bishop Museum of Science and Nature, 201 10th St. W, Bradenton. 941-746-4131. bishopscience.org .