"Walk in the Park" covers basic Sonoran Desert ecology, at 9 a.m., Monday through Saturday. "Birds of Tohono Chul" helps identify both native and migratory species at 8:30 a.m., Monday, Wednesday and Friday. Tours are included with admission; $8, $6 senior, $4 student with valid ID, $2 age 5 through 12, free member or child younger than 5, includes admission to the park. Visit tohonochulpark.org
for more information.