hawk migration studies by southeastern michigan raptor...
TRANSCRIPT
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Hawk Migration Studies by
Southeastern Michigan Raptor Research
at the Detroit River Mouth:A Basic Look
Paul CypherSoutheastern Michigan
Raptor Research
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1983: Started as a volunteer-staffed hawkwatch based at Lake Erie Metropark using multiple count stites (known as Lake Erie Metropark Hawkwatch); coordinated by Tim Smart1990: Coverage more consistent; First season w/100,000+ birds
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1998:Obtained 501(c)3 status 2000: Hired first paid counter (funding from MDNR)2001: Began receiving fundingfrom Detroit Edison/ DTE Energy2003: Recorded 3 millionth bird2003: Documented 23rd species
1994:435,000 total birds 1996: 500+ hours of observation
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Michigan,UnitedStates
Ontario,Canada
HBMOHoliday Beach
Conservation Area
Lake Erie
Grosse Ile,Michigan
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Michigan,UnitedStates
Ontario,Canada
HBMOHoliday Beach
Conservation Area
SMRRLake Erie Metropark
Pointe Mouillee
SGA
Lake Erie
2 miles
Grosse Ile,Michigan
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HBMOHoliday Beach
Conservation Area
SMRRLake Erie Metropark
Pointe Mouillee
SGA
Lake Erie
Main Count Site75% of hours
Michigan,UnitedStates
Ontario,Canada
Grosse Ile,Michigan
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HBMOHoliday Beach
Conservation Area
SMRRLake Erie Metropark
Pointe Mouillee
SGA
Lake Erie
Secondary Count Site
25% of hours(used on north winds)
Michigan,UnitedStates
Ontario,Canada
Grosse Ile,Michigan
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HBMOHoliday Beach
Conservation Area
SMRRLake Erie Metropark
Pointe Mouillee
SGA
Lake Erie
8 miles
Michigan,UnitedStates
Ontario,Canada
Grosse Ile,Michigan
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• Flight Preferences of individual species
• Wind: Speed and Direction• Cloud cover, barometric pressure, etc.
• Water: Shorelines and Islands• Altitude: High (Canada) vs. Low (Michigan)
• Geography: Landform funnel effect
Factors Influencing Migration
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8:00AM
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10:00AM
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N
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N
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N
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• Flight Preferences of individual species
• Wind: Speed and Direction• Cloud cover, barometric pressure, etc.
• Water: Shorelines and Islands• Altitude: High (Canada) vs. Low (Michigan)
• Geography: Landform funnel effect
Factors Influencing Migration
![Page 21: Hawk Migration Studies by Southeastern Michigan Raptor …web4.uwindsor.ca/.../$FILE/Cypherv2slides.pdf · First season w/100,000+ birds. 1998:Obtained 501(c)3 status 2000: Hired](https://reader033.vdocuments.us/reader033/viewer/2022050505/5f970ea344b2967735545f74/html5/thumbnails/21.jpg)
51Peregrine FalconFalco peregrinus
50MerlinFalco columbarius
1,739American KestrelFalco spaverius
111Golden EagleAquila chrysaetos
71Rough-legged HawkButeo lagopus
7,414Red-tailed HawkButeo jamaicensis
8Swainson’s HawkButeo swainsoni
183,895Broad-winged HawkButeo platypterus
792Red-shouldered HawkButeo lineatus
34Northern GoshawkAccipiter gentilis
619Cooper’s HawkAccipiter cooperii
9,449Sharp-shinned HawkAccipiter striatus
802Northern HarrierCircus cyaneus
170Bald EagleHaliaeetus leucocephalus
140OspreyPandion haliaetus
32,160Turkey VultureCathartes aura
SMRR Season Averages (1992 - 2003)
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Red-tailed Hawk
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Broad-winged Hawk
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Rough-legged Hawk
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Swainson’s Hawk
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51Peregrine FalconFalco peregrinus
50MerlinFalco columbarius
1,739American KestrelFalco spaverius
111Golden EagleAquila chrysaetos
71Rough-legged HawkButeo lagopus
7,414Red-tailed HawkButeo jamaicensis
8Swainson’s HawkButeo swainsoni
183,895Broad-winged HawkButeo platypterus
792Red-shouldered HawkButeo lineatus
34Northern GoshawkAccipiter gentilis
619Cooper’s HawkAccipiter cooperii
9,449Sharp-shinned HawkAccipiter striatus
802Northern HarrierCircus cyaneus
170Bald EagleHaliaeetus leucocephalus
140OspreyPandion haliaetus
32,160Turkey VultureCathartes aura
SMRR Season Averages (1992 - 2003)
![Page 27: Hawk Migration Studies by Southeastern Michigan Raptor …web4.uwindsor.ca/.../$FILE/Cypherv2slides.pdf · First season w/100,000+ birds. 1998:Obtained 501(c)3 status 2000: Hired](https://reader033.vdocuments.us/reader033/viewer/2022050505/5f970ea344b2967735545f74/html5/thumbnails/27.jpg)
Golden Eagle
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51Peregrine FalconFalco peregrinus
50MerlinFalco columbarius
1,739American KestrelFalco spaverius
111Golden EagleAquila chrysaetos
71Rough-legged HawkButeo lagopus
7,414Red-tailed HawkButeo jamaicensis
8Swainson’s HawkButeo swainsoni
183,895Broad-winged HawkButeo platypterus
792Red-shouldered HawkButeo lineatus
34Northern GoshawkAccipiter gentilis
619Cooper’s HawkAccipiter cooperii
9,449Sharp-shinned HawkAccipiter striatus
802Northern HarrierCircus cyaneus
170Bald EagleHaliaeetus leucocephalus
140OspreyPandion haliaetus
32,160Turkey VultureCathartes aura
SMRR Season Averages (1992 - 2003)
![Page 29: Hawk Migration Studies by Southeastern Michigan Raptor …web4.uwindsor.ca/.../$FILE/Cypherv2slides.pdf · First season w/100,000+ birds. 1998:Obtained 501(c)3 status 2000: Hired](https://reader033.vdocuments.us/reader033/viewer/2022050505/5f970ea344b2967735545f74/html5/thumbnails/29.jpg)
Osprey
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Bald Eagle
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Peregrine Falcon
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51Peregrine FalconFalco peregrinus
50MerlinFalco columbarius
1,739American KestrelFalco spaverius
111Golden EagleAquila chrysaetos
71Rough-legged HawkButeo lagopus
7,414Red-tailed HawkButeo jamaicensis
8Swainson’s HawkButeo swainsoni
183,895Broad-winged HawkButeo platypterus
792Red-shouldered HawkButeo lineatus
34Northern GoshawkAccipiter gentilis
619Cooper’s HawkAccipiter cooperii
9,449Sharp-shinned HawkAccipiter striatus
802Northern HarrierCircus cyaneus
170Bald EagleHaliaeetus leucocephalus
140OspreyPandion haliaetus
32,160Turkey VultureCathartes aura
SMRR Season Averages (1992 - 2003)
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Osprey: 1992-2004
050
100150200250300
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
*200
4
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Bald Eagle: 1992-2004
0
50
100
150
200
25019
92
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
*200
4
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Peregrine Falcon: 1992-2004
0
20
40
60
80
10019
92
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
*200
4
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Turkey Vultures
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51Peregrine FalconFalco peregrinus
50MerlinFalco columbarius
1,739American KestrelFalco spaverius
111Golden EagleAquila chrysaetos
71Rough-legged HawkButeo lagopus
7,414Red-tailed HawkButeo jamaicensis
8Swainson’s HawkButeo swainsoni
183,895Broad-winged HawkButeo platypterus
792Red-shouldered HawkButeo lineatus
34Northern GoshawkAccipiter gentilis
619Cooper’s HawkAccipiter cooperii
9,449Sharp-shinned HawkAccipiter striatus
802Northern HarrierCircus cyaneus
170Bald EagleHaliaeetus leucocephalus
140OspreyPandion haliaetus
32,160Turkey VultureCathartes aura
SMRR Season Averages (1992 - 2003)
![Page 38: Hawk Migration Studies by Southeastern Michigan Raptor …web4.uwindsor.ca/.../$FILE/Cypherv2slides.pdf · First season w/100,000+ birds. 1998:Obtained 501(c)3 status 2000: Hired](https://reader033.vdocuments.us/reader033/viewer/2022050505/5f970ea344b2967735545f74/html5/thumbnails/38.jpg)
Turkey Vulture: 1992-2004
010,00020,00030,00040,00050,00060,00070,00080,000
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
*200
4
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Red-shouldered Hawk
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51Peregrine FalconFalco peregrinus
50MerlinFalco columbarius
1,739American KestrelFalco spaverius
111Golden EagleAquila chrysaetos
71Rough-legged HawkButeo lagopus
7,414Red-tailed HawkButeo jamaicensis
8Swainson’s HawkButeo swainsoni
183,895Broad-winged HawkButeo platypterus
792Red-shouldered HawkButeo lineatus
34Northern GoshawkAccipiter gentilis
619Cooper’s HawkAccipiter cooperii
9,449Sharp-shinned HawkAccipiter striatus
802Northern HarrierCircus cyaneus
170Bald EagleHaliaeetus leucocephalus
140OspreyPandion haliaetus
32,160Turkey VultureCathartes aura
SMRR Season Averages (1992 - 2003)
![Page 41: Hawk Migration Studies by Southeastern Michigan Raptor …web4.uwindsor.ca/.../$FILE/Cypherv2slides.pdf · First season w/100,000+ birds. 1998:Obtained 501(c)3 status 2000: Hired](https://reader033.vdocuments.us/reader033/viewer/2022050505/5f970ea344b2967735545f74/html5/thumbnails/41.jpg)
Red-shouldered Hawk: 1992-2004
0
200
400
600
800
1,000
1,20019
92
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
*200
4
![Page 42: Hawk Migration Studies by Southeastern Michigan Raptor …web4.uwindsor.ca/.../$FILE/Cypherv2slides.pdf · First season w/100,000+ birds. 1998:Obtained 501(c)3 status 2000: Hired](https://reader033.vdocuments.us/reader033/viewer/2022050505/5f970ea344b2967735545f74/html5/thumbnails/42.jpg)
0102030405060708090
100
2001 2002 2003 *2004 Theo.
ImmatureAdult
Red-shouldered Hawk Adult/Immature Ratios 2001-2004
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0102030405060708090
100
2001 2002 2003 *2004 Theo.
ImmatureAdult
Red-shouldered Hawk Adult/Immature Ratios 2001-2004
NO RECRUITMENT?!?!
![Page 44: Hawk Migration Studies by Southeastern Michigan Raptor …web4.uwindsor.ca/.../$FILE/Cypherv2slides.pdf · First season w/100,000+ birds. 1998:Obtained 501(c)3 status 2000: Hired](https://reader033.vdocuments.us/reader033/viewer/2022050505/5f970ea344b2967735545f74/html5/thumbnails/44.jpg)
Conclusions:
• Migration studies must continue…
• Includes long-term funding for counters, bandersand on-site/off-site education
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Thanks to…
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Thanks to…