People wearing costumes walk during Halloween in Sierra Madre, California, U.S., October 31, 2017. (Photo by Mario Anzuoni/Reuters)

A woman wearing a mask walks past an antique store in Hong Kong, Friday, March 25, 2022. (Photo by Kin Cheung/AP Photo)

An Afghan boy walks past a destroyed Russian-made tank, in Kabul, Afghanistan on February 24, 2020. (Photo by Mohammad Ismail/Reuters)

An Afghan burqa-clad woman carries a child as she walks along a road in Herat on October 1, 2023. (Photo by Mohsen Karimi/AFP Photo)

A goat wearing a sweater walks in a field in New Delhi, India, Thursday, January 17, 2019. (Photo by Altaf Qadri/AP Photo)

A young boy walks to his school bus on a foggy day in Dubai on March 14, 2024. (Photo by Chris Whiteoak/The National)

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.