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Metadata
Study Area.
During 1990-1999, 10 annual Winter Bird Counts (WBC)
were conducted on 4800 acres of
Archbold’s main property (but excluding the
southeastern-most Hicoria Tract). The count area was
divided into 15 units following property tract boundaries
(see map [b]).
Dates.
Counts
were conducted in mid-January. For all years counts were conducted on days
with normal seasonal temperatures and, but for one year
(1994), on days with little wind (see Table
1 below).
Methods. Counts
were conducted using National Audubon
Society Christmas Bird Count (CBC) methods. The effort was
to count all birds at the Station.
Observers. Biases from observer
variability were minimized by using, as much as possible,
the same observers year after year in the same property
unit, and usually units the observers were familiar with
from their field research. Two observers participated in
all 10 counts, one in 9 counts, and several in 6 counts.
Overall 55 ornithologists and field ecologists
participated (see Table 1 below).
Table 1. Dates, Weather, & Participants
(n=55).
|
|
1990
|
1991
|
1992
|
1993
|
1994
|
1995
|
1996
|
1997
|
1998
|
1999
|
|
January
|
7
|
11
|
9
|
8
|
19
|
23
|
15
|
13
|
9
|
15
|
|
Max. F
|
86
|
85
|
81
|
85
|
65
|
79
|
74
|
70
|
77
|
74
|
|
Min.
F
|
62
|
61
|
46
|
65
|
45
|
37
|
32
|
53
|
59
|
52
|
|
Com- ments
|
fog AM, PMstrong
SW wind
|
sunny,
PM mod.
SW wind
|
--
|
PM very windy
|
NE
wind, 25+
mph
all
day
|
PM strong SW
wind
|
clear to
1600, no wind
|
overcast
NE wind
|
Ideal;
AMclear
calm
|
overcast calm
|
|
Party 1
|
FEL
|
FEL
|
FEL
|
FEL
|
FEL
|
FEL
|
FEL
|
FEL
|
DRB
PMB
|
FEL
|
|
2
|
GEW
|
GEW
|
GEW
|
GEW
|
GEW
|
GEW
|
GEW
|
GEW
HBT
|
GEW
|
GEW
|
|
3
|
JWF
|
JWF
|
JWF
|
JWF
|
JWF
|
JWF
|
JWF
|
JWF
|
JWF
|
JWF
|
|
3a
|
JWF
ML
|
JWF
|
JWF
|
JWF
|
JWF
|
DEW TPG
|
DEW TPG BM
|
CSA
|
LAR
|
RLC
|
|
4
|
LAH
|
MAM
|
DEW
TPG
|
KAT
|
KAT
|
KAT JJ
|
KAT
|
KAT
|
KAT BSN
|
RML
VAH
|
|
5
|
SRP
|
MAM
|
DEW TPG
|
KAT
|
KAT
|
KAT JJ
|
KAT
|
KAT
|
KAT BSN
|
RML VAH
|
|
6
|
MAM PLM
|
WGA
|
WGA JB
|
WGA
|
WGA JPH EDH
|
JMG WJK
|
JMG
|
RY
|
RGSR
|
RGSR
|
|
7
|
RLC
|
MAM
|
JMG
|
JMG PM
|
MAG
|
MAG
|
MAG
|
RB
|
AMF TLG
|
AMF TLG
|
|
8
|
ML
|
ELM JMG
|
JDG
|
BP
|
BP
|
BP
|
BP
|
BP
|
BP
|
MAM
|
|
9
|
BAK
|
ELM JMG
|
JDG
|
BP
|
BP
|
BP
|
BP
|
BP
|
BP
|
DAA KBB
|
|
10
|
MMcP GMcP
|
ELM JMG
|
RB CC
|
RB
|
RB LMR
|
RB LNP MM
|
AMF LMW
|
AMF
|
RB
|
RB
|
|
11
|
MAD STD
|
MAD
|
MAD
|
MAD STD
|
LAR DLL
|
LAR DLL
|
LAR
|
DEB
|
DLL DS
|
DS PMB
|
|
12
|
RLM
|
RLM
|
RLM
|
RLM
|
DFS
|
MAM LMW
|
MAM JMG
|
DEW TPG
|
DEW BM
|
DEW TPG
|
|
12a
|
RLM
|
RBR
|
SS
|
SS
|
SJS
|
JSG
|
JPH
|
JPH
|
JPH EDH
|
JPH EDH
|
|
13
|
--
|
--
|
--
|
JAW
|
JAW
|
JAW
|
JAW
|
JAW
|
JAW
|
JAW
|
David
A. Aborn, Warren G. Abrahamson, Curtis S. Adkisson, David R.
Barber, Patricia M. Barber, Reed Bowman, Kim Boots Brand, Jonathan
Brown, Dirk E. Burhans, Christine Champ, Robert L. Curry, Mark A.
Deyrup, Stephen L. Deyrup, John W. Fitzpatrick, Arthur L.
Fleischer, Mary L. Garvin, Tina L. Gionfriddo, Jill M. Goldstein,
John D. Grahame, Jon S. Greenlaw, Elizabeth D. Hailman, Jack P.
Hailman, Valerie A. Haines, Lisa A. Hanners, Jodie Jawor, William
J. Keating, Barbara A. Kittleson, Ross M. Lein, David L. Leonard,
Manuel Lopez, Michael A. MacMillian, Gail A. McPeek, Mark A.
McPeek, Ben Marks, Paige L. Martin, Piotr Matyjasiak, Mary
Mitchell, Ronald L. Mumme, Brian S. Nelson, Steve R. Patton, Bill
Pranty, Lisa M. Richman, Larry A. Riopelle, Ralph G.S. Risch,
Richard B. Root, Sarah Sargent, Steven L. Schoech, Douglas F.
Stotz, Diana Swan, Keith L. Tarvin, Harrison B. Tordoff, Lee M.
Walton, Glen E. Woolfenden, Janet A. Woolfenden, Rebecca Yahr.
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