MIGRATION SUMMARY FOR AUGUST 29th TO

SEPTEMBER 4th, 2008

 

Pelee Island Bird Observatory (PIBO)

 

 

Migrants were active at the Point during most of the summary period and a moderate but steady stream of birds was recorded moving through the count area on a daily basis. The wind went south on September 1st and activity eventually tapered off towards the end of the week, but 91 species were tallied over seven days – a season-high to date – including nineteen warbler species.    

 

PIBO staff were kept busy in the final days of August with 124 birds banded from the 29th – 31st including 92 warblers of twelve species. Magnolias and American Redstarts were active along with good numbers of Chestnut-sided and Black-throated Blue Warblers. Other species appearing in increasing numbers included Least Flycatcher, Red-eyed Vireo, Veery, Swainson’s Thrush and Bobolink, with 33 of the latter species recorded on August 31st. An Olive-sided Flycatcher observed on census on the 30th was new for the Fall. The first Merlin of the season and ‘firsts’ for Bay-breasted and Palm Warbler were also noted during this time.

 

A similar mix of species arrived on September 1st when 51 birds were banded and 47 species were recorded during the count period. Warm temperatures and south winds on the 2nd produced a quieter morning although thirteen warbler species were noted on the day and Red-eyed Vireos were active, with ten recorded. The final two days of the summary period saw a further drop in numbers and there were no new arrivals with the exception of a Baird’s Sandpiper on the 4th. Just seven birds were captured on the 3rd and 42 species were tallied the next day compared to 61 a few days earlier on August 30th.      

 

A total of 91 species was recorded at the Point this week during the official count period compared to 83 last week and ten Fall ‘firsts’ were noted, which brings the Fall species total to 102. In all, 232 birds were banded along with five recaptures in 370 net-hours, for an average catch-rate of .64 birds/net-hour.  

 

Tennessee Warbler photo – Sumiko Onishi

 

PIBO’s next summary will be posted on September 13th.       

 

Birds Documented at Fish Point by PIBO staff from August 29thSeptember 4th, 2008

 

Date

Aug/Sep

29

30

31

1

2

3

4

 

 

 

 

 

 

 

 

 

Species

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Double-crested Cormorant

10K

818

10

460

90

3

3K

Great Blue Heron

 

2

1

 

 

1

2

Turkey Vulture

 

 

1

 

1

 

 

Canada Goose

 

 

35

5

8

2

39

Wood Duck

 

2

 

1

1

2

11

5

American Black Duck

1

1

 

 

 

 

 

Mallard

 

8

5

 

 

 

1

6

Red-breasted Merganser

 

 

 

 

 

1

1

Osprey

 

 

 

 

 

1

1

 

Bald Eagle

 

1

1

1

 

 

 

 

Red-tailed Hawk

 

 

 

1

1

1

1

Merlin

 

 

1

 

 

 

 

 

Wild Turkey

 

 

 

 

 

1

2

 

Semipalmated Plover

 

 

1

 

 

 

 

Killdeer

 

5

3

4

 

 

 

1

Greater Yellowlegs

 

 

1

 

 

 

 

Lesser Yellowlegs

 

 

 

 

 

1

 

Spotted Sandpiper

3

2

2

5

1

1

2

Sanderling

 

 

7

 

 

 

 

 

Baird's Sandpiper

 

 

 

 

 

 

1

Least Sandpiper

1

1

 

 

 

 

 

American Woodcock

 

 

 

 

 

 

1

Bonaparte's Gull

 

5

 

 

 

1

 

Ring-billed Gull

90

22

8

17

30

5

40

Herring Gull

 

50

8

21

25

30

16

30

Great Black-backed Gull

50

30

20

35

35

18

35

Caspian Tern

 

1

 

 

 

 

1

Common Tern

 

 

 

8

 

7

 

Mourning Dove

3

4

6

3

9

5

3

Rock Dove

 

 

 

1

 

 

 

 

Yellow-billed Cuckoo

1

1

 

 

 

2

1

Black-billed Cuckoo

 

 

 

 

1

 

 

Eastern Screech-Owl

 

 

 

 

 

1

 

Chimney Swift

1

 

3

 

 

 

 

Ruby-throated Hummingbird

1

 

 

1

 

 

 

Red-bellied Woodpecker

 

1

 

 

 

 

 

Downy Woodpecker

4

4

4

1

5

5

2

Northern Flicker

2

3

2

 

1

2

 

Olive-sided Flycatcher

 

1

 

 

 

 

 

Eastern Wood-Pewee

3

5

4

5

5

2

1

Yellow-bellied Flycatcher

 

3

5

1

4

2

1

Least Flycatcher

1

7

2

 

1

1

 

Great Crested Flycatcher

1

1

1

1

1

1

1

Eastern Kingbird

 

2

2

1

 

 

 

Red-eyed Vireo

5

7

11

4

10

5

3

Warbling Vireo

 

1

 

 

1

1

 

Blue Jay

 

1

3

5

2

3

3

2

American Crow

5

1

1

3

1

4

1

Purple Martin

23

3

4

7

3

2

11

Barn Swallow

16

22

11

6

 

4

13

Black-capped Chickadee

3

21

11

3

14

8

1

Red-breasted Nuthatch

1

1

 

 

2

 

 

Brown Creeper

4

 

 

 

 

 

 

Carolina Wren

2

6

6

5

3

4

3

House Wren

 

 

4

2

3

3

1

 

Blue-gray Gnatcatcher

 

2

3

 

1

1

 

American Robin

1

7

3

4

4

2

1

Wood Thrush

2

1

 

 

 

1

 

Veery

 

2

4

8

4

4

4

2

Swainson's Thrush

1

3

4

7

4

 

9

Gray Catbird

 

 

1

1

1

 

 

 

European Starling

 

7

21

 

 

12

 

Cedar Waxwing

22

22

45

23

60

11

24

Tennessee Warbler

5

 

 

3

1

 

 

Nashville Warbler

2

 

2

7

 

 

 

Yellow Warbler

 

 

 

1

 

 

 

Chestnut-sided Warbler

6

2

3

 

4

1

 

Magnolia Warbler

13

9

7

12

9

 

4

Cape May Warbler

 

 

 

1

 

 

 

Black-throated Blue Warbler

14

5

6

1

1

1

2

Blackburnian Warbler

 

 

 

1

2

 

 

Black-thr. Green Warbler

1

3

 

 

 

 

 

Palm Warbler

 

 

1

 

 

 

 

Bay-breasted Warbler

 

 

1

 

1

 

 

Black-and-white Warbler

5

1

5

4

1

1

 

American Redstart

13

11

5

6

11

3

2

Ovenbird

 

6

3

7

4

2

2

2

Northern Waterthrush

1

4

1

2

4

 

1

Mourning Warbler

 

 

 

 

1

 

 

Common Yellowthroat

1

 

1

 

1

 

 

Wilson's Warbler

1

 

 

1

1

1

 

Canada Warbler

 

1

3

 

 

1

 

Northern Cardinal

5

5

3

2

3

4

 

Rose-breasted Grosbeak

1

 

 

 

 

2

 

Indigo Bunting

 

1

 

 

 

1

 

Bobolink

 

 

10

33

4

5

6

5

Red-winged Blackbird

34

25

46

9

42

42

1

Common Grackle

204

18

8

46

80

18

5

Baltimore Oriole

1

3

3

 

1

1

 

House Finch

 

 

3

2

2

2

1

1

American Goldfinch

4

6

6

5

6

23

4

 

 

 

 

 

 

 

 

 

SPECIES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Day

 

52

61

57

47

53

56

42

 

 

 

 

 

 

 

 

 

Fall 2008

 

93

96

100

100

100

101

102

 

 

 

 

 

 

 

 

 

This period

91

 

Previous period

 

83

 

 

 

 

 

 

 

 

 

August/September

29

30

31

1

2

3

4

 

 

 

 

 

 

 

 

 

Weather- 1 hr. after sunrise

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Wind direction/strength1

SSW3

NW1

NW1

SE5

SSE2

S2

E6

Visibility (km)

15

15

30

30

30

20

25

Cloud cover (0-10)

10

1

0

0

4

0

8

Temperature (o C)

20

17

20

21

20

19

20

Precipitation

 

 

 

 

 

 

 

 

1 Beaufort scale