MIGRATION SUMMARY – AUGUST 22nd TO 28th, 2007

 

Pelee Island Bird Observatory (PIBO)

 

Migration activity was generally light at the start of the week and then picked up considerably during the final three days of the summary period. Light north winds on August 26th produced the first significant influx of birds at the station this month, followed by another busy morning on the 27th when sixty-two species were recorded on the day, including fifteen warbler species. Least Flycatchers, Red-eyed Vireos and Magnolia Warblers were particularly active this week along with a nice variety of other early-Fall migrants.         

 

August 22nd

 

It was warm and humid today and there were few birds in the area apart from small numbers of flycatchers, swallows and warblers. The first Rose-breasted Grosbeak of the Fall was recorded on census along with approximately 700 Common Terns. 

 

August 23rd

 

The wind shifted to the north overnight but steady rain throughout the day limited coverage to just the morning census and some additional observations. Not many birds to report with the exception of a small movement of swallows.     

 

August 24th  

 

A few more migrants in the area this-morning but mostly just in ones-and-twos. A Black-throated Blue Warbler was new for the Fall and a local band of Black-capped Chickadees was active on census and in the netting area. Otherwise, not too much to report.

 

August 25th  

 

Another day of hot humid weather (23° C at dawn), west winds and very little migration activity. The first Mourning Warbler of the fall was one of only four warbler species tallied on the day.

 

August 26th

 

A change in the weather and an increase in bird numbers – sixty-two species were recorded during the morning coverage period. The mist-netting area was a little busier as well with forty-four birds banded of fifteen species, including nine members of the warbler family. Seven flycatcher species were counted along with increased numbers of vireos and thrushes. Black-throated Green, Bay-breasted and Wilson’s Warblers were all new for the Fall.    

 

August 27th  

 

Migrants were active at the station this-morning and lots of birds were recorded both on census and in the netting area. Sixty-two species were documented in the count area and 104 birds of seventeen species were banded in sixty net-hours (1.73 birds/net-hour). Magnolia Warblers were dominant along with smaller numbers of a nice variety of other species including Least Flycatcher, American Redstart, Tennessee, Nashville, Chestnut-sided and Black-and-white Warblers. A banded Blue-winged Warbler and a Scarlet Tanager observed in the netting area were both new for the Fall.

 

August 28th

 

It was another busy morning with seventy-four birds of sixteen species banded and fifty-six species tallied during the official count period. Red-eyed Vireos, Magnolia and Chestnut-sided Warblers were observed in good numbers. Sixty of the seventy-four banded birds were members of the warbler family.  

 

Eighty-two species were recorded at the Point this week compared to seventy-six last week and fifteen Fall ‘firsts’ were tallied, which brings the season species count to 108. In all, 235 birds were banded and two recaptured during 278 net-hours for a catch-rate of .85 birds/net-hour.

 

Swainson’s Thrush photo – Christopher Dunn

 

Next week’s summary will be posted on September 6th.

 

Birds Documented at Fish Point                    August 22nd – 28th, 2007 

    

Date

August

22

23

24

25

26

27

28

 

 

 

 

 

 

 

 

 

Species

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Double-crested Cormorant

130

90

600

1.2K

400

800

400

Great Blue Heron

 

 

1

1

 

3

1

Turkey Vulture

 

 

 

 

 

 

2

Canada Goose

22

 

 

2

7

 

 

Wood Duck

 

 

 

 

 

1

 

Cooper's Hawk

 

 

 

 

 

 

1

Wild Turkey

 

 

1

1

1

2

 

Semipalmated Plover

3

3

3

2

2

 

 

Killdeer

 

3

 

2

1

2

1

 

Spotted Sandpiper

 

 

1

2

1

 

 

Sanderling

1

1

1

3

18

 

 

Semipalmated Sandpiper

 

 

 

 

11

 

 

Least Sandpiper

1

 

 

 

3

 

 

Bonaparte's Gull

 

 

1

1

24

 

 

Ring-billed Gull

300

180

40

350

20

400

80

Herring Gull

40

20

52

38

25

35

20

Great Black-backed Gull

40

20

45

40

30

40

30

Caspian Tern

2

1

 

1

 

2

1

Common Tern

730

250

430

700

500

700

700

Mourning Dove

3

1

26

9

12

15

9

Yellow-billed Cuckoo

2

 

2

 

 

 

 

Chimney Swift

2

 

 

 

2

 

1

Ruby-throated Hummingbird

 

 

 

1

2

 

Red-bellied Woodpecker

 

 

1

 

1

1

1

Downy Woodpecker

2

1

3

3

4

3

3

Northern Flicker

1

 

1

 

3

2

5

Eastern Wood-Pewee

3

3

4

3

4

3

3

Yellow-bellied Flycatcher

 

 

 

 

8

 

1

Alder Flycatcher

 

 

 

 

1

 

 

Least Flycatcher

1

 

1

1

10

11

5

Great Crested Flycatcher

 

 

1

2

1

1

1

Eastern Kingbird

2

 

 

 

3

8

 

Red-eyed Vireo

2

 

3

3

5

6

22

Warbling Vireo

 

 

 

 

 

1

1

Philadelphia Vireo

 

 

 

 

 

 

1

Blue Jay

 

2

1

7

2

5

4

5

American Crow

4

 

2

3

1

3

2

Purple Martin

5

7

8

13

3

7

15

N. Rough-winged Swallow

 

4

 

 

 

 

 

Bank Swallow

 

6

 

3

 

 

 

Barn Swallow

17

35

17

20

4

5

11

Black-capped Chickadee

8

4

17

6

9

8

3

Red-breasted Nuthatch

3

 

2

 

8

4

6

Carolina Wren

3

2

2

1

4

4

3

House Wren

 

 

2

1

2

2

1

American Robin

1

2

2

1

5

3

2

Veery

 

 

 

2

1

4

8

7

Swainson's Thrush

 

 

 

 

5

5

2

European Starling

5

 

7

 

1

3

 

Cedar Waxwing

32

3

28

13

29

8

6

Blue-winged Warbler

 

 

 

 

 

1

 

Tennessee Warbler

 

 

 

 

 

10

5

Nashville Warbler

 

 

 

 

 

12

2

Yellow Warbler

 

 

3

 

1

 

 

Chestnut-sided Warbler

 

 

1

 

2

15

20

Magnolia Warbler

 

 

2

 

20

47

35

Cape May Warbler

 

 

 

 

 

2

1

Black-throated Blue Warbler

 

 

1

 

 

3

4

Blackburnian Warbler

 

 

1

 

 

2

5

Black-thr. Green Warbler

 

 

 

 

1

 

 

Bay-breasted Warbler

 

 

 

 

1

3

5

Black-and-white Warbler

 

 

3

 

2

14

10

American Redstart

 

 

 

1

12

15

18

Ovenbird

 

1

 

1

1

5

9

6

Northern Waterthrush

1

1

 

 

3

4

 

Mourning Warbler

 

 

 

1

2

 

1

Wilson's Warbler

 

 

 

 

2

3

2

Canada Warbler

2

 

3

1

4

6

2

Scarlet Tanager

 

 

 

 

 

1

1

Northern Cardinal

5

4

7

6

8

4

5

Rose-breasted Grosbeak

1

 

 

 

 

2

4

Indigo Bunting

1

1

4

 

3

1

1

Chipping Sparrow

 

 

 

 

 

1

 

Savannah Sparrow

 

 

 

 

1

 

 

Song Sparrow

 

 

1

 

1

1

 

Bobolink

 

 

 

4

27

7

11

 

Red-winged Blackbird

42

4

8

14

24

33

45

Common Grackle

17

7

147

8

256

59

37

Baltimore Oriole

5

2

8

 

7

5

2

House Finch

 

 

8

 

 

4

5

American Goldfinch

2

 

6

3

11

8

13

House Sparrow

4

 

3

 

 

 

 

 

 

 

 

 

 

 

 

 

SPECIES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Day

 

41

24

51

40

62

62

56

 

 

 

 

 

 

 

 

 

Fall 2007

 

95

95

96

97

102

106

107

 

 

 

 

 

 

 

 

 

This period

82

 

Previous period

76

 

 

 

 

 

 

 

 

 

August

 

22

23

24

25

26

27

28

 

 

 

 

 

 

 

 

 

Weather - 1 hr after sunrise

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Wind direction/strength1

SSE2

NW3

W2

W4

N3

E2

S2

Visibility (km)

10

20

30

30

30

30

25

Cloud cover (0-10)

10

10

4

9

1

1

1

Temperature o C)

21

20

22

23

19

17

21

Precipitation

 

RAIN

 

 

 

 

 

1 Beaufort scale