amphiscians
n. inhabitants of the tropics

angustation
n. the condition of being narrowed, constricted, limited, or confined

caducity
n. frailty, transitoriness

avolation
n. the act of flying away

This is the song of the last male Kauaʻi ʻōʻō, recorded in the Alaka’i Wilderness Preserve on Kauaʻi in 1987. Rats, pigs, hurricanes, and disease-carrying mosquitoes had reduced the species to a single pair by 1981, and the female was not found after Hurricane Iwa in 1982. The male was last seen in 1985. This appears to be his song, overheard two years later, the last trace of a vanishing species.