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Our Two Orioles
By Tait Johansson
One of the most notable avian events of May, a month with no
shortage of such events, is the return of our two species of oriole from their
Mexican and Central American wintering grounds. The arrival of such tropical-looking birds has always seemed to me
an assurance that, at long last, spring really has finally gotten
its act together, and that warm weather is here to stay.
Even many casual observers of nature are familiar with the
species whose flame-colored plumage led Emily Dickinson to call it
"the meteor of birds": the Baltimore Oriole, Icterus albula.
This species is not
only a spectacular sight, but, happily, a common one in our area in summer.
Breeding Baltimore Orioles can be found in many different semi-open habitats containing deciduous trees, including suburban yards and parks. Their distinctive hanging nests are often easily found, usually suspended from some downward-angled tree branch.
The adult male’s orange under parts, tail edges, and upper tail coverts, coupled with a black head, back, center of tail, and
wings (with white wing bars) render him unmistakable. The female is
a drabber version of the male (which still leaves her a
strikingly plumaged bird), with a mottled brownish color replacing the
male’s black on the head, and a duller orangey-yellow color
instead of the male’s bright orange on the under parts.
L ess well known is the Orchard Oriole,
Icterus spurius. This smaller, slimmer species, not nearly as brightly
colored as our more common oriole, has an extraordinary, though subtler, beauty
of its own. The adult male is almost identical in pattern to an adult male
Baltimore, but the under parts are a rich, dark chestnut, and the tail is
entirely black. The female is mostly a greenish yellow, with a light gray back
and dark gray wings with white wing bars.
Orchard Orioles are found in habitats similar to those
occupied by Baltimores, but besides being much more sparsely distributed, seem
to be especially fond of locations near bodies of water such as streams and
lakes. The Orchard Oriole’s song, a rich, jumbled warble, is the one area in
which it might be said to outdo the Baltimore in flair. The Baltimore’s song, a
mellow, labored whistle, though pleasant, lacks the melodic complexity of its
relative’s.
Like most of our Neotropical migrants, both species stay with
us for only about four months (though the occasional Baltimore Oriole can linger
into winter, usually with the help of a bird feeder). So our window of
opportunity for enjoying orioles is short, one of many good reasons never to be
caught outside without your binoculars in May.
Photo of Baltimore Oriole Courtesy of and Copyright © by
Dick Budnik Photography
DickBudnik@verizon.net
http://mysite.verizon.net/DickBudnik
Photo of Orchard Oriole Courtesy of and Copyright © by Jody Hildreth of KidWings
www.kidwings.com/localbirds
Copyright © 2003-2006 Bedford Audubon Society
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