Please review our hiker info page to familiarize yourself with hiker safety rules and our hike ratings so that you can select hikes that meet your level of fitness. Unless specified otherwise in the activity descriptions below, hikes have a 15 person limit, and they begin in the ABDNHA parking lot.

In-Person Lecture

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Today

  • Lecture: “I May Still Be Speaking” – Indigenous Oral Tradition of Northern Baja California

    ABDNHA Library 652 Palm Canyon Drive, Borrego Springs, CA, United States

    Speaker: Michael Wilken-Robertson, Anthropologist
    Indigenous people of northern Baja California share ancient cultural and linguistic ties with other Yuman groups of southern California and Arizona. Over the millennia, native peoples developed richly elaborate cosmologies in which the earth, sky, plants, and animals were infused with spirit; these narratives were passed along through myths, legends, stories, and song. In this lively talk, we will hear examples of storytelling from the Kumeyaay, Paipai, and Kiliwa peoples that Wilken-Robertson has worked with for over 40 years in Baja California. The narratives will be considered in their cultural context to help us better understand the meanings embedded in them and why the particular narratives passed down for generations remain compelling to listeners today.

    Anthropologist Michael Wilken-Robertson has developed lifelong collaborative relationships with native artists and traditional authorities to foster cultural revitalization and sustainable community development in northern Baja. He has taught in the anthropology department at California State University, San Marcos. His fascination with native plants and the natural landscapes of the Californias have inspired him to explore the many ways that humans have interacted with their environments, from the ancient past to the present. Michael resides in Ensenada, Baja California, Mexico. In the ABDNHA Library. GP $12, M $10, V $8. Register online, or call us at 760-767-3098.

    Register here for the program.

  • Talk & Walk: Plants of Anza-Borrego

    ABDNHA Parking Lot 652 Palm Canyon Drive, Borrego Springs, CA, United States

    Leader: Don Rideout, Coordinator, Desert Botany Club

    Short Lecture and Field Trip (Easy walk, okay for all vehicles)

    An offering of the new Botany Club, these walks will focus on the plants of Anza-Borrego Desert, with locations varying depending on where we find the most interesting plants. Our pace will be generally slow, allowing plenty of time for plant identification, questions, discussion, and photography.  All levels of knowledge are welcome, including children. Meet at ABDNHA; carpool as best we can, as we head to the field trip site. No Charge. Space is limited. Register at the Nature Center or call 760-767-3098.

  • Lecture: Native Bats of Anza-Borrego Desert State Park

    ABDNHA Library 652 Palm Canyon Drive, Borrego Springs, CA, United States

    Speaker: Don Endicott
    Don is a volunteer naturalist with a special interest in bats and bat research. He records bat echolocation sounds and submits them to the San Diego Natural History Museum's acoustics collection, as well as for research and analysis in commercial bat software. Don began conducting this acoustic research on the park's bat population in early 2020, following a fire in Borrego Palm Canyon. If time and conditions permit, he will lead the group outdoors after the lecture to see if he can detect the calls of active bats. At the ABDNHA Library. GP $12, M $10, V $8. Register online, or call the Nature Center at 760-767-3098.

    Register here for the program.

  • Lecture: Swainson’s Hawk Incredible Migration

    ABDNHA Library 652 Palm Canyon Drive, Borrego Springs, CA, United States

    Speaker: Hal Cohen, Hawkwatch founder
    Learn about the Swainson's Hawk and its incredible 6,000-mile migration from Argentina to the skies above Borrego Springs, on its way to Alaska. Hal will share highlights of this migration, hawk natural history, hawkwatch history, and invite your participation in the hawkwatch. Following the talk, interested participants are invited to attend the evening watch (one hour before sunset to dark). ABDNHA Library. GP $12, M $10, V $8. Register at abdnha.org or call us at 760-767-3098.

    Register here for the program.

  • Lecture: Plant Sex – Everything You Didn’t Know to Ask about Sex in the Desert

    ABDNHA Library 652 Palm Canyon Drive, Borrego Springs, CA, United States

    Speaker: Botanist Kate Harper
    Is there such a thing as ADULT botany?  Botanist Kate Harper says there is as she explains in her presentation how human sex and plant sex have surprising comparisons – and even more surprising differences! Come experience a racy romp through the world of plant sex. An extensive handout is included. In the ABDNHA Library. GP $12, M $10, V $8. You can register online or at the Nature Center, 760-767-3098.

    Register here for the program.

  • Lecture: Dudleya, California’s Unique Succulent

    ABDNHA Library 652 Palm Canyon Drive, Borrego Springs, CA, United States

    Speaker: Jeff Moore, Author, Owner of Solana Succulents 
    Dudleya are beautiful succulents native to California, with some occurrences in northern Baja, Mexico, and Oregon. Jeff’s presentation will cover most of the currently described species in California and Baja, following the flow of his new book, co-written with Jeremy Spath and Kelly Griffin.

    Dudleya are found in some of the most stunning locations along the California coast—complete with cliffside backdrops and vast ocean vistas, and their photographs are breathtaking, as Jeff will share during the presentation. Jeff first became interested in Dudleya when he saw some at the San Diego County Fair in the early 1980s. He began selling them in his spare time, which eventually led to the opening of Solana Succulents in 1992. GP $12, M $10, V $8. Register online or at the Nature Center by calling 760-767-3098.

    Register here for the program.

  • Lecture: What’s Up with the Hawkwatch?

    ABDNHA Library 652 Palm Canyon Drive, Borrego Springs, CA, United States

    Speakers: Tracee Geernaert and Candice Hess, Hawkwatch Leaders
    Come to the ABDNHA Library to see and hear what’s new in 2026 for the Swainson’s Hawkwatch. Hear about peak counts, which occur mid-March, and we are hoping for a great year. Our early bloom bodes well for lots of insects, also known as “hawk food.” We will bring photos, anecdotes, and lots of laughs from the field!

    The Hawkwatch update will also include a talk by visiting wildlife biologist Lizzi Weisman who is part of one of the longest-running raptor studies in North America, the Butte Valley Swainson’s Hawk project. She will discuss their study of the ecology of Swainsons hawks in Butte Valley to determine how their reproductive success is related to the quality of the habitat they choose for their nests. Register online or call 760-767-3098. GP $12, M $10, V $8.

    Register here for the program.

  • Lecture: Burrowing Owls Acoustic Research

    ABDNHA Library 652 Palm Canyon Drive, Borrego Springs, CA, United States

    Speaker: Samantha Lima, Ph.D.
    Sam is a postdoc at the San Diego Zoo Wildlife Alliance, where she conducts research on burrowing owls. Tonight, she will introduce bioacoustics and its application in species monitoring and explain the work of SDZWA to monitor these charismatic birds using passive acoustic methods. Additionally, she will include a demonstration of the equipment and engage in discussions about acoustic fieldwork. GP $12, M $10, V $8. Register online or at the Nature Center, 760-767-3098.

    Register here for the program.

  • Talk & Walk: Plants of Anza-Borrego – CANCELLED

    ABDNHA Parking Lot 652 Palm Canyon Drive, Borrego Springs, CA, United States

    Leader: Don Rideout, Coordinator, Desert Botany Club
    *** THIS PROGRAM IS CANCELLED DUE TO EXTREME HEAT ***

    Short Lecture and Field Trip (Easy walk, okay for all vehicles)

    An offering of the new Botany Club, these walks will focus on the plants of Anza-Borrego Desert, with locations varying depending on where we find the most interesting plants. Our pace will be generally slow, allowing plenty of time for plant identification, questions, discussion, and photography.  All levels of knowledge are welcome, including children. Meet at ABDNHA; carpool as best we can, as we head to the field trip site. No Charge. Space is limited. Register at the Nature Center or call 760-767-3098.

  • Program: The Trail Less Traveled – Baja

    ABDNHA Library 652 Palm Canyon Drive, Borrego Springs, CA, United States

    Speaker: Alan Ehrgott

    Author Alan Ehrgott’s (The Elusive Conquest of Queen Califa) fascination with Baja started in the 1970s when he hiked the entire 1050 mile length of the peninsula, following a mix of the Camino Real, the old route established by the Spanish that led from mission to mission, as well as the far more rugged route through Baja’s mountains, where isolated ranches continue to exist today. While things are far more developed along the heavily travelled Mexico Highway 1, life in the isolated ranches have changed far less. In his presentation, Alan shows parts of his original journey, and tells the story of the natural and cultural history of Baja, including the existential conflict between native tribes, Spanish conquistadors and Jesuit Priests, and he highlights points of interest such as the UNESCO Indigenous giant rock murals in the Sierra San Francisco. In the ABDNHA library. Register online or call 760-767-3098. GP $12, M $10, V $8.

    Register here for the program.

  • ABDNHA Desert Lecture Series: Bobcats in the Neighborhood

    Featured
    Borrego Springs Performing Arts Center 590 Palm Canyon Drive, Borrego Springs, CA, United States

    Speaker: Andy Blue
    Andy Blue discusses a fascinating animal, the bobcat, found both in the wild and in our semi-rural community of Borrego Springs. Although bobcats are more numerous than many realize, they are more secretive than their fellow upper-tier predator, the coyote.

    Andy has been a powerhouse in the zoological community for many years, working in Russia, Ukraine, Iraq, Cuba, Southeast Asia, and Latin America. He started at the San Diego Zoo Safari Park at age 16 and became a curator. He has served as Zoological Manager at Disney’s Animal Kingdom and as director of the Ramona Wildlife Center. Currently, he is the Campus Director at the San Diego Humane Society. The highlight of his job is returning rehabilitated animals to the wild. General Public: $10 at the door; Members: no charge. Seating is first-come, first-served.

  • Botany Club Meeting

    ABDNHA Library 652 Palm Canyon Drive, Borrego Springs, CA, United States

    Leader: Don Rideout

    Since it is too darn hot to hike, let's have an indoor meeting. Don will give a Powerpoint talk about desert lilies including updates from this season.

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