Pests, such as parasites and pathogens, persist throughout time and space as threats
to public health and food security. The need for novel and sustainable approaches to
managing these threats are in high demand. The current approach of discovering and
developing chemical treatments to manage pests is tedious, not efficient, and often
outpaced by traits of resistance in pests. Here, we propose a new approach to discovering
new chemical pest management solutions by observing chemical coping behaviors in wildlife.
We define a chemical coping behavior as the exploitation of naturally occurring chemicals
within a host's environment to manage pests. Specifically, the use of greenery in
nests by avian species may provide clues to plants that can deter ectoparasites. Plants
use chemical defenses to cope with their own parasites, pathogens, and herbivores, which
avian hosts can exploit to combat pests in nests. A local host-pest-plant interaction was
investigated to discover the potential chemical diversity and bioactivity of greenery found
in nests of golden eagles (Aquila chrysaetos). We found that each plant offered
unique chemicals, but that the plant species underrepresented in nests compared to availability
in the landscape provided greater diversity in volatile chemicals whereas overrepresented plant
species provided greater diversity in water-soluble chemicals compared to other plants.
Furthermore, we tested how concentration and diversity of volatile and water-soluble
chemicals in plant species found in nests of golden eagles affected the behavior of a
hematophagous parasite (Cimex lectularius, the common bed bug). We found that bed
bugs spent less time resting and transitioned from grooming to exploration at an increased
frequency with high concentration and diversity of volatiles from plants found in nests of
golden eagles. Observing the chemical coping behaviors in the wild could provide a sustainable
framework for discovering diverse and robust sources of chemicals and modes of action that
can used to manage pests of human concern.