June 11, 1851 

Henry goes nocturnal, "to see objects by moonlight as well as sunlight to get a complete notion of them."

Eastern Whip-poor-will sounds by Daniel Parker, XC325436 (Accessible at www.xeno-canto.org/325436) and by Dylan Pedro, XC239651 (Accessible at www.xeno-canto.org/239651).

Common Nighthawk sounds by Sunny, XC490771. Accessible at www.xeno-canto.org/490771.

Connecticut Warbler sounds by Nancy Hetrick, XC252951. Accessible at www.xeno-canto.org/252951.

Music: "La Stanza di Nelson 2" by Bottega Baltazar; "Hammer and Felt" by Beneath the Mountain

(All songs used courtesy of the artists through a licensing agreement with Artlist)

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