In 2019, Zion museum staff worked with a conservator to rehouse natural history bird specimens in museum quality containers to enhance safety and preservation. The specimens were first analyzed with an X-Ray Fluorescence Spectrometer (XRF) to detect the presence of heavy metal pesticides used in preparing legacy collections such as arsenic, lead, and mercury. The specimens were then sealed in airtight polypropylene bags to contain the toxins. Each container was label with the catalog number, collection information, and the results of the XRF test.