Meet Our Speakers: Alejandra Calvo-Fonesca


“You’re going to have to swim!” These were the words of Alejandra “Alex” Calvo-Fonesca when our boat ran out of gas in Ciénega de Santa Clara, a vast marsh of recycled irrigation water in Sonora, México. Her mischievous smile told us she was joking, and she quickly produced a paddle with which to rescue us. Wildlife Survey Coordinator for ProNatura, Alex brims with enthusiasm for her job. “It’s like school,” she says. “I’m always learning. Sometimes I have a theory, and my coworkers know what’s going on in the place. We correlate the two and learn. That’s what I love.” When Alex majored in aquaculture at Universidad Autónoma de Guadalajara, she planned to design ornamental aquaria. Instead, she began working at a shrimp farm and surveying birds for ProNatura, a nonprofit that has been collaborating with governments and local communities to restore the Colorado River Delta since 1990.  Now in her ninth year, Alex has risen from fieldwork to the office. “I knew nothing about biology when I started, but they provided a workshop,” Alex explains. She conducted vegetation and wildlife surveys, learning to identify marsh birds such as sora, least bittern, and the endangered Yuma clapper-rail by ear. Alex’s curiosity has earned her a vast and growing base of knowledge. She can point out native cattails and introduced cane, bird species in English and Spanish, and even the way out of a mazelike marsh when your boat runs out of gas.

By Nina Finley