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Sapsuckers and Hummingbirds
© Duane Bryce/Vitaliy Khustochka
The sapsucker is a type of woodpecker that notches rows of small holes in trees, causing sap to well out. The birds eat the sugary liquid flowing from these sapwells. Now tree sap is similar in sugar content to the nectar hummingbirds take from flowers. And it is no coincidence that just as the Yellow-bellied Sapsuckers get their sapwells flowing in spring, Ruby-throated Hummingbirds come migrating north. Several species of hummingbirds partake of the bounty of sap released by sapsuckers, even nesting close to active sapwells and following the sapsuckers as they fly from one sap tree to another.
Sapsuckers and Hummingbirds
Written by Bob Sundstrom
This is BirdNote.
[Calls of Yellow-bellied Sapsucker]
When it comes to goofy bird names, there’s something irresistible about “Yellow-bellied Sapsucker.” But funny name and all, the Yellow-bellied Sapsucker is a real bird. [Drumming of Yellow-bellied Sapsucker] And its story tells us something fascinating about the timing of migration.
Sapsuckers are a specialized group of woodpeckers that notch rows of small holes in trees, causing sap to well out. The birds eat the sugary liquid flowing from these sapwells.
Yellow-bellied Sapsuckers, which winter in the southeastern U.S. and Central America, migrate north in early spring at the time when, as the saying goes, the “sap is running.” [Drumming of Yellow-bellied Sapsucker]
Now tree sap is similar in sugar content to the nectar hummingbirds take from flowers. And it is no coincidence that just as the sapsuckers get their sapwells flowing in spring, Ruby-throated Hummingbirds come migrating north. [Ruby-throated Hummingbird sounds]
The hummingbirds rely on the bounty of sap released by sapsuckers. The hummers are so attuned to the sapsuckers that they will nest close by active sapwells, and even follow their benefactors as they fly from one sap tree to another. [Ruby-throated Hummingbird sounds]
A remarkable connection between two very different birds, with a migratory pattern all set in motion by warming days, which get the sap running.
For BirdNote, I’m Michael Stein. [Drumming of Yellow-bellied Sapsucker]
Sounds of provided by The Macaulay Library of Natural Sounds at the Cornell Lab of Ornithology, Ithaca, New York. Call of Yellow-bellied Sapsucker 132198 recorded by G.F. Budney; drum of Yellow-bellied Sapsucker 133139 recorded by M. J. Anderson.
Ruby-throated Hummingbird wing sound and call recorded by Martyn Stewart of naturesound.org.
Producer: John Kessler
Executive Producer: Chris Peterson
© 2014 Tune In to Nature.org April 2014 Narrator: Michael Stein
ID# sapsucker-hummingbird-01-2012-04-30 sapsucker-hummingbird-01
There are multiple sources that agree on the migration timing connection, including BNA. An excellent source geared to the general public on sapsucker natural history is http://nationalzoo.si.edu/scbi/migratorybirds/featured_birds/default.cfm...