Date: 1/10/19 6:50 pm
From: Paul Stensvaag <red.tail1960...> [ILbirds] <ILbirds-noreply...>
Subject: IBET No Sightings, but, Science Daily article
Hummingbird courtship:

https://www.sciencedaily.com/releases/2018/12/181218115150.htm

Date:December 18, 2018Source:Princeton UniversitySummary:Male Broad-tailed
Hummingbirds perform dramatic aerial courtship dives to impress females. In
a new study, scientists have shown that diving males closely time key
events to produce a burst of signals for the viewer. They synchronize
maximal horizontal speed, loud noises generated with their tail feathers,
and a display of their iridescent throat-patch (gorget), performed in a
mere 300 milliseconds -- roughly the duration of a human blink.

 
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