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We often think of natural history libraries serving as memorials for lost species, animals like the passenger pigeon and the dodo living on only in books, photos, and illustrations that tell sad cautionary tales of once-abundant populations lost to overhunting or habitat destruction.

However, such records also tell stories of hope, providing valuable resources for modern scientists working to protect threatened wildlife. Since it was founded in 2006, BHL’s historical documents have supported the work of conservationists devoted to saving everything from Caribbean mammals to rare wetland plants. Not only are accessible records that describe the historic ranges, populations, and other characteristics of a species essential for researchers, but they help remind the public of how vibrant historical ecosystems were—and the importance of protecting what is left.

“The real advantage of BHL is keeping our ecological memory intact, and not allowing us to collectively forget how beautiful, wild, and diverse ecosystems of the past were,” wrote historical ecologist Dr. Joshua Drew in a blog post from BHL’s 2020 Earth Optimism campaign. “If we succumb to this collective amnesia, we risk setting our conservation bar too low and allowing the dulling of our natural environments to continue without even recognizing our losses.”

As part of BHL’s Earth Optimism series, we’re sharing the conservation success stories of four bird species, all prominently featured in the BHL collection, whose impending losses were reversed through the efforts of concerned citizens and researchers.

In 1780, French naturalist François Le Vaillant traveled to the Cape of Good Hope and subsequently spent several years studying the region’s biodiversity. During his three journeys—the first around Cape Town and Saldanha Bay (April to August 1781), the second eastwards from the Cape (December 1781 to May 1783), and the third to the Orange River and into Great Namaqualand (June 1783 to c. May 1784)—Le Vaillant amassed a collection of thousands of specimens. Upon returning to Europe, he published accounts of his travels within Voyage dans l’intérieur de l’Afrique (1790, 2 vols.) and Second voyage dans l’intérieur de l’Afrique (1796, 3 vols.)—both of which were best sellers and were translated into several languages.

Within these narratives, Le Vaillant writes repeatedly of his Khoikhoi guide, whom he called Klaas (but whose name in Klaas’s own Khoe language seems to be unrecorded). Le Vaillant’s respect and affection for Klaas is evident. In the first volume of his Voyage dans l’intérieur de l’Afrique, Le Vaillant writes:

“…le bon Klaas fut déclaré mon égal, mon frère, le confident de tous mes plaisirs, de mes disgrâces, de toutes mes pensées ; il a plus d’une fois calmé mes ennuis, & ranimé mon courage abattu.” [“…the good Klaas is declared my equal, my brother, the confidant of all my pleasures, of my disgraces, of all my thoughts; he has more than once calmed my troubles, & revived my shattered courage.”]

Klaas, of whom Le Vaillant wrote “by long practice [he] had become a naturalist”, also collected specimens for the French naturalist, which Le Vaillant later described within publications such as Histoire naturelle des oiseaux d’Afrique (1796–1808, 6 vols.). One such specimen was that of Klaas’s cuckoo, a species native to the wooded regions of sub-Saharan Africa. According to Le Vaillant, Klaas collected the specimen “près de la rivière Platte” (“near the Platte river”). It was the only individual of this species that the company encountered during their expedition.

Feathers have been used in fashion throughout history, but the trend became more widespread from the late 18^th century when the Industrial Revolution made luxuries more available to the masses. In the 19^th century, new technology improved the speed of production and the millinery industry boomed. Hats with feathers became a status symbol coveted by a new mass market and were produced on an industrial scale.

Birds were hunted around the world to supply plumes to centres of fashion such as London and New York. In 1886, American Museum of Natural History’s ornithologist, Frank Chapman, infamously observed on a walk in New York some 40 native bird species on women’s hats, some with an entire stuffed bird attached. Indeed, women were oft blamed for the trend: in The Ibis in 1887, women were pointed to as “the indirect, but real, instigators of this slaughter”. The author continues: “all that can be hoped for is that the freaks of feminine vanity may take some other and less harmful direction.”

The solitary sea squirt Ascidiella aspersa is native to the Northeastern Atlantic, from the Mediterranean Sea to Norway. Living in shallow sheltered sites and harbors, this species has a fast growth rate and is able to produce a large number of larvae.

These attributes have helped make it a successful colonizer of non-native environments, such as the Southwestern Atlantic, where it has become an invasive species introduced likely via ships.

Dr. Evangelina Schwindt, Head of the Grupo de Ecología en Ambientes Costeros from CONICET in Argentina, studies Ascidiella aspersa as part of her research as a marine invasive ecologist. Her work involves researching the interactions between invasive and native species, the patterns and processes occurring in biological invasions from the historical and present-day perspectives, the impact caused by invasive species, and the management strategies that can be applied.

Alexander von Humboldt (1769-1859) was a man who believed all of nature was interconnected, and that by affecting one aspect of nature, other parts of nature would be affected, too—for good or ill. Humboldt believed that one’s own emotions and subjective views were necessary in order to completely experience nature. Simply taking measurements or classifying animals, plants, rocks and other forms of life would never allow one to fully experience the truth of nature.

We are honored to celebrate the career of Susan Fraser, who last month retired as the Thomas J. Hubbard Vice President and Director of the LuEsther T. Mertz Library at The New York Botanical Garden (NYBG). During her 36 years at NYBG, Susan made significant contributions to the Garden, the global library and botanical community, and the Biodiversity Heritage Library (BHL).

Earlier this year Dr. Simon Leslie, Francis Houssemayne du Boulay’s great-grandson, contacted Melbourne Museum about accessing du Boulay’s hand-painted Coleoptera volumes, held in the Museums Victoria Archives. Dr. Leslie and family accessed the physical volumes in February 2020. While I carefully supervised flipping through the pages of these volumes, I was intrigued by their aesthetic, and scientific and historic, value. Since then, the volumes have been digitised by Biodiversity Heritage Library (BHL) Australia.