Donald Mitchell
obtained an M.S. degree in Conservation Biology
at the University of Minnesota and has conducted
field studies of hummingbirds and the plants
they pollinate in Minnesota, Wisconsin, Colorado
and California. He is a federally-permitted
hummingbird bander and serves as Vice President
of the Minnesota Ornithologists' Union. He
is a Goodhue County Master Gardener and attracts
hundreds of hummingbirds annually to his garden
near the Mississippi River in Red Wing.
WHY BAND HUMMINGBIRDS
Bird banding is a very important
tool in ornithological research. When a bird
is banded, important data about the bird such
as age, sex, condition, and plumage and characteristics
may be collected. The information may also
included making any number of measurements,
especially the wing chord (length of the flattened
wing from wrist to tip of the longest primary
feather), tail length, mass, and bill length.
After the banding the bird is released, the
data is filed the Bird Banding Laboratory,
including precise information about date and
location of capture. If someone encounters
the bird at a later date, the band number
can be reported toll-free at 1-800-327-BAND
or through the BBL's Web site. Contact is
then made with the bander and is informed
as to where and when the banded bird was found
and by whom. The finder receives a Certificate
of Appreciation and is told where and when
the bird was banded.
HOW HUMMINGBIRDS ARE
BANDED
Once a hummingbird is captured,
it must be temporarily immobilized so it can
be banded and measured. Different hummingbird
banders use different techniques for holding
the birds; some place them in mesh lingerie
bags and gently pull the birds leg through
an opening for banding.
Others use the technique of placing hummingbirds
carefully headfirst into a small paper tube
slightly larger than the bird. While in the
tube, the hummingbird can't struggle and hurt
itself, and it can be banded and measured.
The bander places a partially opened hummingbird
band (which had been formed previously) into
special banding pliers and slides it over
the leg of the bird. The band is then crimped
shut and checked to assure that it is perfectly
round and fits well. A common method used
is to band all male Ruby-throated Hummingbirds
on the LEFT leg, females on the RIGHT.
(Go
Back)
|