MIGRATION SUMMARY

AUGUST 29th to SEPTEMBER 4TH, 2007

Pelee Island Bird Observatory (PIBO)

 

Not many birds were encountered at the station this week yet migrants were still reasonably active despite just two days of north winds and generally warm temperatures.  Swainson’s Thrushes and Veery’s were abundant – 120 of 268 captures this week were members of the thrush family – but flycatchers, vireos and warblers were also present in good numbers in the final days of August. A young male Kentucky Warbler banded on the 31st was a surprise and an unusual Fall record.     

 

August 29th  

 

South winds and warm temperatures made for a fairly quiet morning. There were ones-and-twos of a nice variety of species but just eight warbler spp. recorded on the day. A banded Wood Thrush was new for the Fall and fairly late compared to previous years. Gulls and shorebirds were scarce although a season-high 800 Common Terns were counted on census.   

 

August 30th

 

A few more birds in the area today with the following species recorded in moderate numbers – Red-eyed Vireo, Swainson’s Thrush, Magnolia Warbler, American Redstart and Ovenbird, along with a nice variety of other migrants. Fifty-eight species were tallied on the day including thirteen warbler spp.     

 

August 31st   

 

Northeast winds and a cool 15° C at dawn made for a busier morning at the station both on the census and in the netting area. Sixty-three species were recorded during the morning count period and 66 birds of twenty-one species were banded, including a Kentucky Warbler and Yellow-breasted Chat. A Buff-breasted Sandpiper was noted at the Tip during non-standard coverage.       

 

September 1st   

 

Another active morning but with less diversity than the 31st – fifty-four species were counted and fifty-three birds of thirteen species were banded. Lot’s of Swainson’s Thrushes (Daily Total 34/banded 23), Veerys and Red-eyed Vireos but not as many flycatchers and warblers. The first Lincoln’s Sparrow of the Fall was observed in the netting area.   

 

September 2nd  

 

A very similar day with Magnolia Warblers, thrushes and an array of other September migrants filtering through the area in moderate numbers. All of the terns have departed from the Tip and there were no shorebirds among the fifty species recorded during the morning count period. The first Gray-cheeked Thrush of the season was observed on census.  

 

September 3rd

 

It was quieter this-morning – just forty species were observed and twelve birds of six species were captured. A lone Sanderling and fewer than one-hundred gulls were observed at the Tip, and songbirds were scarce as well – just six warbler spp. and less than a dozen thrushes were counted during the official coverage period.        

 

September 4th  

 

Migrants continue to arrive at Fish Point even though the wind is from the east and the weather is hot and humid. A Baird’s Sandpiper was one of three waders recorded on the census. The first Merlin and Common Yellowthroat of the Fall were two of forty-seven species counted on the day.

 

Ninety species were recorded at the Point this week compared to eighty-two last week and nine Fall ‘firsts’ were tallied, which brings the season species count to 117. In all, 268 birds were banded and seven recaptured during 403 net-hours for a catch-rate of .67 birds/net-hour.

 

Kentucky Warbler photo (hatch-year male/August 31) – PIBO

 

Next week’s summary will be posted on September 13th.

 

Birds Documented at Fish Point   August 29thSeptember 4th, 2007 

    

Date

Aug/Sep

29

30

31

1

2

3

4

 

 

 

 

 

 

 

 

 

Species

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Double-crested Cormorant

40

400

2K

4K

3K

130

740

Great Blue Heron

 

1

 

2

 

1

2

Turkey Vulture

5

3

 

 

 

 

4

Canada Goose

 

21

23

28

23

8

 

Mallard

 

8

 

 

2

 

 

 

Bald Eagle

 

 

1

 

 

 

 

Northern Harrier

 

 

1

1

 

 

1

Sharp-shinned Hawk

1

 

 

 

 

 

2

Merlin

 

 

 

 

 

 

 

1

Wild Turkey

 

 

 

 

12

 

2

Semipalmated Plover

 

1

1

 

 

 

 

Killdeer

 

 

1

1

1

 

 

 

Spotted Sandpiper

 

 

1

 

 

 

 

Ruddy Turnstone

 

 

 

 

 

 

1

Sanderling

 

 

3

 

 

1

1

Baird's Sandpiper

 

 

 

 

 

 

1

Bonaparte's Gull

 

4

3

22

 

 

 

Ring-billed Gull

40

50

500

160

350

50

18

Herring Gull

25

23

60

25

12

8

11

Great Black-backed Gull

35

30

50

25

35

40

35

Caspian Tern

2

 

 

 

 

 

 

Common Tern

800

600

40

 

 

 

 

Mourning Dove

7

4

5

 

7

4

5

Rock Dove

25

 

 

11

 

 

 

Great Horned Owl

 

1

 

 

1

 

1

Eastern Screech-Owl

 

 

1

 

 

 

 

Chimney Swift

1

 

 

2

1

 

3

Ruby-throated Hummingbird

 

 

1

3

1

1

Red-bellied Woodpecker

1

1

2

3

1

3

1

Downy Woodpecker

3

5

5

5

6

3

3

Yellow-shafted Flicker

1

2

1

1

 

 

1

Eastern Wood-Pewee

2

3

4

3

4

3

4

Yellow-bellied Flycatcher

 

2

2

2

2

2

 

"Traill's" Flycatcher

 

2

1

 

 

 

 

Least Flycatcher

3

2

8

2

1

1

 

Great Crested Flycatcher

1

1

1

2

 

 

1

Eastern Kingbird

4

 

1

 

 

 

 

Red-eyed Vireo

10

13

13

15

8

6

5

Warbling Vireo

1

3

 

2

1

1

 

Philadelphia Vireo

 

 

2

 

2

1

 

Blue Jay

 

7

4

5

8

10

6

5

American Crow

1

2

1

2

4

1

2

Purple Martin

3

5

1

 

2

 

 

N. Rough-winged Swallow

 

 

 

 

4

 

 

Bank Swallow

 

 

3

1

5

 

 

Tree Swallow

 

 

2

 

 

 

 

Barn Swallow

7

7

1

 

6

4

 

Black-capped Chickadee

7

4

4

5

5

4

3

Red-breasted Nuthatch

1

6

11

7

4

3

4

Carolina Wren

3

2

3

 

5

 

 

House Wren

1

1

 

 

 

1

 

Blue-gray Gnatcatcher

 

2

 

 

 

1

 

American Robin

1

1

 

1

1

2

2

Wood Thrush

1

 

 

 

1

 

 

Veery

 

4

4

12

12

13

3

3

Swainson's Thrush

3

10

14

34

29

7

29

Gray-cheeked Thrush

 

 

 

 

1

 

 

Gray Catbird

 

 

1

 

1

 

 

European Starling

 

1

1

4

 

 

 

Cedar Waxwing

12

7

12

12

15

9

5

Tennessee Warbler

 

1

 

 

 

 

 

Nashville Warbler

1

1

 

 

 

 

 

Chestnut-sided Warbler

1

7

5

1

 

 

 

Magnolia Warbler

15

17

22

6

16

 

3

Cape May Warbler

 

2

 

 

 

 

1

Black-throated Blue Warbler

 

1

1

2

3

1

 

Blackburnian Warbler

 

1

1

1

 

1

1

Black-thr. Green Warbler

 

 

2

 

 

 

 

Bay-breasted Warbler

1

2

1

 

 

1

 

Blackpoll Warbler

 

 

3

1

2

 

 

Black-and-white Warbler

1

4

2

2

3

2

 

American Redstart

4

7

6

4

3

2

4

Ovenbird

 

1

8

4

4

4

 

4

Northern Waterthrush

1

2

 

1

3

1

4

Kentucky Warbler

 

 

1

1

 

 

 

Common Yellowthroat

 

 

 

 

 

 

1

Wilson's Warbler

 

3

4

3

3

 

1

Canada Warbler

 

 

1

1

 

 

1

Yellow-breasted Chat

 

 

1

 

 

 

 

Northern Cardinal

2

4

5

4

4

3

3

Rose-breasted Grosbeak

2

3

4

3

5

1

2

Indigo Bunting

1

2

1

3

1

1

 

Song Sparrow

 

 

 

1

 

 

 

Lincoln's Sparrow

 

 

 

1

 

 

 

Bobolink

 

1

1

 

 

2

 

1

Red-winged Blackbird

3

 

8

11

 

 

 

Common Grackle

200

231

109

48

80

75

90

Baltimore Oriole

2

3

2

2

 

 

1

House Finch

11

4

4

9

14

11

12

American Goldfinch

4

9

11

17

9

1

17

 

 

 

 

 

 

 

 

 

SPECIES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Day

 

51

58

63

54

50

40

47

 

 

 

 

 

 

 

 

 

Fall 2007

 

109

110

113

114

115

115

117

 

 

 

 

 

 

 

 

 

This period

90

 

Previous period

82

 

 

 

 

 

 

 

 

 

August/September

29

30

31

1

2

3

4

 

 

 

 

 

 

 

 

 

Weather - 1 hr after sunrise

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Wind direction/strength1

SSW3

NNE3

NNE4

E2

SE2

W4

E3

Visibility (km)

20

25

30

30

30

25

15

Cloud cover (0-10)

0

8

1

0

0

0

8

Temperature o C)

22

20

15

15

18

20

20

Precipitation

 

 

 

 

 

 

 

1 Beaufort scale