American singer and actress Sabrina Carpenter arrives for the Givenchy Spring/Summer 2024 womenswear fashion collection presented Thursday, September 28, 2023 in Paris. (Photo by Vianney Le Caer/AP Photo)

A model walks the runway during the Shona Joy “Le Long de la Côte” collection launch runway on September 21, 2023 in Sydney, Australia. (Photo by Brendon Thorne/Getty Images)

Models wear creations as part of the Dolce & Gabbana women's Spring Summer 2023 collection presented in Milan, Italy, Saturday, September 24, 2022. (Photo by Antonio Calanni/AP Photo)

A model presents a creation from the Dolce & Gabbana Fall/Winter 2024 collection during Fashion Week in Milan, Italy, on February 24, 2024. (Photo by Claudia Greco/Reuters)

A model presents a creation for Iris Van Herpen during the Women's Haute-Couture Fall/Winter 2025-26 collection show in Paris, on July 7, 2025. (Photo by Thomas Samson/AFP Photo)

Models present a creations by Maggie Ma collection during the SS2026 China Fashion Week, in Beijing, China, Tuesday, September 9, 2025. (Photo by Andy Wong/AP Photo)

American model Kendall Jenner was seen departing the Prunier restaurant in Paris on October 1, 2025 amid Fashion Week for the Spring/Summer 2026 Women's Ready-to-Wear Collection. (Photo by Best Image/BACKGRID)

Sharon Beals is a San Francisco based photographer who has photographed nest and eggs specimens collected over the last two centuries at The California Academy of Sciences, The Museum of Vertebrate Zoology, and The Western Foundation of Vertebrate Zoology. While few nests are collected today, these nests and eggs are used for research, providing important information about their builder’s habitats, DNA, diseases and other survival issues.