Ruby-throated HummingbirdsArchilochus colubrisCredit: Bob Isaac
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The Ruby-throated Hummingbird is marvelously adapted to the rigours of climate. It lowers its body temperature and reduces its heart rate on cool nights. Its respiration is interrupted at times for brief moments. Due to this particular adaptation, Ruby-throated Hummingbirds are able to survive at temperatures below 0°C. The period of torpor (temporary dormant state) may extend from 8 to 14 hours. Their metabolism returns to normal after about an hour. To learn more about thermoregulation in hummingbirds, follow this link.
Ruby-throated Hummingbirds (juvenile male)Archilochus colubrisCredit: Serge Beaudette
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The record lifespan of a Ruby-throated Hummingbird is 9 years, but on average they live 2 to 3 years.
To learn more about hummingbird predators, follow this link.
Ruby-throated HummingbirdsArchilochus colubrisCredit: cash52
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As fast as lightning
The Ruby-throated Hummingbird moves at an incredible speed. Its wingbeats have been calculated through filming and photographs, establishing a rhythm of 55 to 75 beats per second.
To learn more about hummingbird flight, follow this link.