This
fall, two unusual bird species were observed in the Berkshires: a
dickcissel, normally found breeding in the grassy fields of the
Midwest and wintering in South America; and a northern wheatear, a
resident of the Canadian Arctic in summer but mostly found throughout
Asia and Europe.
Finding a species uncommon in an area is not only
exciting–an addition to a life list or a locality list–but could
be important in the study of local ecosystems, perhaps indicating
changes in the environment
Ornithology
began with meticulous record-keeping, and the body of knowledge is
forever expanding with the constant accumulation of data.
Most
ornithologists, amateur or professional, have their own methods of
obtaining and verifying sightings–whether plant, insect, mammal or
bird–using the centuries of ornithological literature, which has
expanded so much, I personally have bird books residing (and possibly
breeding) in piles in front of bookcases. At least the piles are
organized.
But
it takes a dedicated scientist to gather information from many
sources, both historic and present day, and organize the data so they
are available to all. One of our well-known local naturalists, David
St. James–a gentle, brilliant soul–was such a man.
He may have
worked as a biologist for the Massachusetts Division of Fisheries and
Wildlife but, throughout his life, he noted everything he saw,
whether it related to work or to the natural history of the
Berkshires.
Often.
St. James–sometimes as scruffy as an old woodsman in layers of
sweaters, well-worn sneakers or rubber boots and a billed cap–could
be found wandering the woods listening for warblers or scanning
Richmond Pond for winter ducks or hiking along a mountain trail in
search of a hawk or owl nest.
In the evenings, he recorded all he had
seen, noting everything about each sighting.
St. James amassed a
wealth of information not only on his own, but also gathered
pertinent data from reference books, from Christmas counts and from
other local birders and began working on an annotated list of
Berkshire birds, an important addition to the existing literature.
You
may go to other books of birds of the area and find out when a
species was initially observed and how common it was, but the
information will be only as updated as the publication date–for
example, Hoffmann’s guide, 1904.
Periodically, different
works update this info in their texts and, flipping from book to
book, you may follow the sequence of a species’ sightings and
frequency of occurrences.
Original review on: heberkshireedge.com
No comments:
Post a Comment