Pennsylvania Game News - September 2013 - 53
body temperature and heart rate.
They also wing-tagged dozens
of them to learn more about
the extent, causes and consequences of their annual
migration.
According to the
sanctuary’s website, its
goals in monitoring
raptors are to “routinely monitor seasonal
populations of vultures in North,
Central and South America, prevent
catastrophic population declines by
sharing learned information with
conservation partners, and use black
and turkey vultures as environmental
sentinels of ecological change and environmental contamination, including
heavy metal contamination.”
The sanctuary has discovered that
our subspecies of turkey vulture Cathartes aura septentrionalis is a partial
migrant to as far south as Texas and
southern Florida, although in February
of 2010 Dr. Keith L. Bildstein and Lauriane Streit drove down the Delmarva
Peninsula from Milford, Delaware to
the Chesapeake Bay Bridge tunnel toll
booth passing numerous chicken farms,
each with its own flock of vultures, and
called it “one of the biggest East Coast
winter resorts for vultures.”
A longer drive along the coast found
there were more turkey vultures than
black vultures, for example, on the
Delmarva drive they counted 245 turkey vultures to 23 black vultures. But
on counts in the Appalachian Mountains from northern West Virginia to
North Carolina and Tennessee there
were more black vultures than turkey
vultures.
Bildstein wrote the turkey vulture
section in the Second Atlas of Breeding
SEPTEMBER 2013
Birds in Pennsylvania and reflects on
the difficulty of finding turkey vulture
nests, saying that up to 70 percent
of a local population may not breed.
Nevertheless, he has good news about
their numbers. They have expanded
in the Appalachian Plateau region of
Pennsylvania from their former range
in the more southerly part of the state
and have shown a 13 percent increase
in breeding blocks from those reported
in the first Pennsylvania breeding bird
atlas project back in 1983-89. The
Breeding Bird Survey also reported a
50 percent increase in turkey vultures
between 1966 and 2009. Migration
hawk watches throughout the state
similarly have observed an increase in
turkey vulture migrants.
Bildstein believes the increase is the
result of several factors that include
increasing numbers of wildlife killed
on highways and decreased persecution of them by humans. While most
Pennsylvanians may not care that
53
Pennsylvania Game News - September 2013
Table of Contents for the Digital Edition of Pennsylvania Game News - September 2013
Contents
Pennsylvania Game News - September 2013 - Cover1
Pennsylvania Game News - September 2013 - Cover2
Pennsylvania Game News - September 2013 - Contents
Pennsylvania Game News - September 2013 - 2
Pennsylvania Game News - September 2013 - 3
Pennsylvania Game News - September 2013 - 4
Pennsylvania Game News - September 2013 - 5
Pennsylvania Game News - September 2013 - 6
Pennsylvania Game News - September 2013 - 7
Pennsylvania Game News - September 2013 - 8
Pennsylvania Game News - September 2013 - 9
Pennsylvania Game News - September 2013 - 10
Pennsylvania Game News - September 2013 - 11
Pennsylvania Game News - September 2013 - 12
Pennsylvania Game News - September 2013 - 13
Pennsylvania Game News - September 2013 - 14
Pennsylvania Game News - September 2013 - 15
Pennsylvania Game News - September 2013 - 16
Pennsylvania Game News - September 2013 - 17
Pennsylvania Game News - September 2013 - 18
Pennsylvania Game News - September 2013 - 19
Pennsylvania Game News - September 2013 - 20
Pennsylvania Game News - September 2013 - 21
Pennsylvania Game News - September 2013 - 22
Pennsylvania Game News - September 2013 - 23
Pennsylvania Game News - September 2013 - 24
Pennsylvania Game News - September 2013 - 25
Pennsylvania Game News - September 2013 - 26
Pennsylvania Game News - September 2013 - 27
Pennsylvania Game News - September 2013 - 28
Pennsylvania Game News - September 2013 - 29
Pennsylvania Game News - September 2013 - 30
Pennsylvania Game News - September 2013 - 31
Pennsylvania Game News - September 2013 - 32
Pennsylvania Game News - September 2013 - 33
Pennsylvania Game News - September 2013 - 34
Pennsylvania Game News - September 2013 - 35
Pennsylvania Game News - September 2013 - 36
Pennsylvania Game News - September 2013 - 37
Pennsylvania Game News - September 2013 - 38
Pennsylvania Game News - September 2013 - 39
Pennsylvania Game News - September 2013 - 40
Pennsylvania Game News - September 2013 - 41
Pennsylvania Game News - September 2013 - 42
Pennsylvania Game News - September 2013 - 43
Pennsylvania Game News - September 2013 - 44
Pennsylvania Game News - September 2013 - 45
Pennsylvania Game News - September 2013 - 46
Pennsylvania Game News - September 2013 - 47
Pennsylvania Game News - September 2013 - 48
Pennsylvania Game News - September 2013 - 49
Pennsylvania Game News - September 2013 - 50
Pennsylvania Game News - September 2013 - 51
Pennsylvania Game News - September 2013 - 52
Pennsylvania Game News - September 2013 - 53
Pennsylvania Game News - September 2013 - 54
Pennsylvania Game News - September 2013 - 55
Pennsylvania Game News - September 2013 - 56
Pennsylvania Game News - September 2013 - 57
Pennsylvania Game News - September 2013 - 58
Pennsylvania Game News - September 2013 - 59
Pennsylvania Game News - September 2013 - 60
Pennsylvania Game News - September 2013 - 61
Pennsylvania Game News - September 2013 - 62
Pennsylvania Game News - September 2013 - 63
Pennsylvania Game News - September 2013 - 64
Pennsylvania Game News - September 2013 - i1
Pennsylvania Game News - September 2013 - i2
Pennsylvania Game News - September 2013 - Cover3
Pennsylvania Game News - September 2013 - Cover4
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