An unexpected
sight on the University of Bridgeport campus are the green monk parakeets.
Natives of Argentina, Brazil, Uruguay, Paraguay, and central Bolivia, they have
been imported into the United States as pets. It is often said that in the late
1960's, a container of parakeets was dropped and broke open at Kennedy Airport
in New York. Several birds escaped and established wild populations in Long
Island. While there is no evidence to
support this story, parakeets were imported into the United States as pets in
the 1960's. Most likely some of these
did escape or were released into the wild when their owners found them to be
undesirable pets. These individuals have
established colonies with populations reported from Branford to Norwalk.
On the U.B. campus, the
parakeets nest in the white pine trees near Barnum Hall. The nests are large
and made of sticks. One in the Black Rock section of Bridgeport measured 9 feet
by 5 feet. Some nests in South America have been known to be as big as 15 to 20
cubic feet and weigh several hundred pounds. Within a nest, the nesting chamber
is 7-9 inches in diameter and connected to the entrance hole by a short tunnel.
The entrance hole is at the bottom or lower side of the nest. This is
apparently effective protection against predators. A single nest can contain up
to 12 nestlings, with the average being five to nine. Most nests are started by
a single pair of birds. Over time, the nest is added to by other pairs of
birds. It is thought that the additional nests are established by offspring of
the original pair.
As students in Barnum Hall can
attest, the parakeets are noisy. These social birds are constantly vocalizing
with squawks and shrieks as they work. Studies have identified eleven different
vocalizations with different meanings.
Many people are surpirsed that
these parakeets can survive our harsh winters. However, though the birds are
native to equatorial countries in South America, they come from mountainous
areas. Also, their nests are well built to insulate them from the cold and
enable them to keep warm with body heat.
|
Parakeet Classification |
|
|
Kingdom
ANIMALIA |
Eukaryotic,
multicellular, heterotrophic living organisms capable of muscular movement. |
|
Phylum
CHORDATA |
Animals with
a dorsal tubular nerve chord, notochord, pharyngeal gill slits, and post anal
tail at some time in their life cycle. |
|
Subphylum
VERTEBRATA |
Chordates in
which the notochord has been replaced with a segmented backbone. |
|
Class AVES |
Warm-blooded
vertebrates with the forelimbs modified as wings, a horny beak, and feathers
covering the body. |
|
Order
PSITTACIFORMES |
|
|
Family
PSITTACIDAE |
|
Monk Parakeets in North America
Institute for Biological
Invasions
Monk Parakeets: Why
here? Connecticut Audubon
Perfessor Birdsley's Monk
Parakeet and Birding Pages
Return to Dr.
Singletary's page
Last Updated: June 30, 2009