Red-necked Grebe Irruption Data – Winter 2003
Here are the totals from around the state concerning
the Red-necked Grebe irruption of 2003. It appears that this irruption has
become the
new benchmark surpassing the 1994
irruption. Thanks go out to Gary Felton and John Trapp for their input on what
tracking criteria would
be useful. Thanks also are due to all of
you who contributed.
2003
15 Counties reported
RNGR's.
Earliest Statewide
Sighting:
Last Statewide Sighting:
Statewide ( Sum of one day maximum counts – all counties ) : 151
Statewide Max ( one day ): 65 -
Statewide Sightings:
613
Statewide Reports: 81
* Note the number of counties
which had their maximum counts on
First Report date:
County one day max: 4 on
# sightings: 7
# reports: 2
# days reported: 2
Mean number of birds/report/day (Sum of all sightings/
# reports): 3
Avg. number of birds/day (Sum of sightings/ # days
reported): 3
Last Sighting:
First Report date:
County one day max: 1 on
# sightings:
2
# reports:
2
# days
reported: 2
Mean number of
birds/report/day (Sum of all sightings/ # reports): 1
Avg. number of birds/day (Sum
of sightings/ # days reported): 1
Last Sighting:
First Report date:
County one day max: 11 on
# sightings:
13
# reports:
2
# days
reported: 2
Mean number of birds/report/day
(Sum of all sightings/ # reports): 6.5
Avg. number of birds/day (Sum
of sightings/ # days reported): 6.5
Last Sighting:
First Report date:
County one day max: 34 on
# sightings:
346
# reports:
34
# days
reported: 30
Mean number of
birds/report/day (Sum of all sightings/ # reports): 10.2
Avg. number of birds/day (Sum
of sightings/ # days reported): 11.5
Last Sighting:
First Report date:
County one day max: 1 on
# sightings:
3
# reports:
3
# days
reported: 3
Mean number of
birds/report/day (Sum of all sightings/ # reports): 1
Avg. number of birds/day (Sum
of sightings/ # days reported): 1
Last Sighting:
First Report date:
County one day max: 4 on
# sightings:
20
# reports:
7
# days
reported: 7
Mean number of
birds/report/day (Sum of all sightings/ # reports): 2.9
Avg. number of birds/day (Sum
of sightings/ # days reported): 2.9
Last Sighting:
First Report date:
County one day max: 65 on
# sightings:
144
# reports:
8
# days
reported: 8
Mean number of
birds/report/day (Sum of all sightings/ # reports): 18
Avg. number of birds/day (Sum
of sightings/ # days reported): 18
Last Sighting:
First Report date:
County one day max: 4 on
# sightings:
23
# reports:
4
# days
reported: 4
Mean number of
birds/report/day (Sum of all sightings/ # reports): 5.8
Avg. number of birds/day (Sum
of sightings/ # days reported): 5.8
Last Sighting:
First Report date:
County one day max: 1 on
# sightings:
1
# reports:
1
# days
reported: 1
Mean number of
birds/report/day (Sum of all sightings/ # reports): 1
Avg. number of birds/day (Sum
of sightings/ # days reported): 1
Last Sighting:
First Report date:
County one day max: 4 on
# sightings:
6
# reports:
3
# days
reported: 3
Mean number of
birds/report/day (Sum of all sightings/ # reports): 2
Avg. number of birds/day (Sum
of sightings/ # days reported): 2
Last Sighting:
First Report date:
County one day max: 3 on
# sightings:
10
# reports:
3
# days
reported: 3
Mean number of birds/report/day
(Sum of all sightings/ # reports): 3.3
Avg. number of birds/day (Sum
of sightings/ # days reported): 3.3
Last Sighting:
First Report date:
County one day max: 5 on
# sightings:
11
# reports:
3
# days
reported: 3
Mean number of
birds/report/day (Sum of all sightings/ # reports): 3.7
Avg. number of birds/day (Sum
of sightings/ # days reported): 3.7
Last Sighting:
First Report date:
County one day max: 1 on
# sightings:
1
# reports:
1
# days
reported: 1
Mean number of
birds/report/day (Sum of all sightings/ # reports): 1
Avg. number of birds/day (Sum
of sightings/ # days reported): 1
Last Sighting:
First Report date:
County one day max: 3 on
# sightings:
5
# reports:
3
# days
reported: 3
Mean number of
birds/report/day (Sum of all sightings/ # reports): 1.7
Avg. number of birds/day (Sum
of sightings/ # days reported): 1.7
Last Sighting:
First Report date:
County one day max: 10 on
# sightings:
21
# reports:
5
# days
reported: 5
Mean number of
birds/report/day (Sum of all sightings/ # reports): 4.2
Avg. number of birds/day (Sum
of sightings/ # days reported): 4.2
Last Sighting: