Table 1 Results of Common Bird Census

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Trench Wood CBC 1987 and 1990  

 

   

Number Pairs

% loss/

BTO *

CODE NAME

1987

1990

Average

2003

Gain

% Change

WW WILLOW WARBLER

68

59

64

3

-95

-44

WR WREN

47

50

49

20

-59

-2

R ROBIN

46

34

40

32

-20

31

GW GARDEN WARBLER

29

10

20

5

-74

48

BC BLACKCAP

24

26

25

5

-80

127

B BLACKBIRD

19

20

20

10

-49

-23

CC CHIFFCHAFF

16

34

25

8

-68

100

N NIGHTINGALE

11

14

13

0

-100

**

CH CHAFFINCH

5

11

8

6

-25

25

D DUNNOCK

4

4

4

P

-100

-24

BT BLUE TIT

4

15

10

9

-5

6

PH PHEASANT

4

P

4

P

-100

43

RB REED BUNTING

3

3

3

P

-100

-62

MT MARSH TIT

3

5

4

P

-100

-40

GT GREAT TIT

3

10

7

13

100

33

ST SONG THRUSH

3

11

7

3

-57

-52

MG MAGPIE

2

1

2

P

-100

75

WK WOODCOCK

2

1

2

0

-100

-88$

GS GREAT SPOTTED WOODPECKER

2

2

2

1

-50

66

J JAY

2

3

3

P

-100

-13

BF BULLFINCH

2

4

3

1

-67

-61

CK CUCKOO

1

1

1

P

-100

-45

GH GRASSHOPPER WARBLER

1

1

1

0

-100

#

TD TURTLE DOVE

1

1

1

0

-100

-73

G GREEN WOODPECKER

1

2

2

P

-100

68

M MISTLE THRUSH

1

P

1

0

-100

-41

TO TAWNY OWL

1

P

1

1

0

-9

C CARRION CROW

P

P

0

P

0

60

JD JACKDAW

P

P

0

P

0

63

LR LESSER REDPOLL

P

P

0

0

0

SH SPARROWHAWK

P

P

0

0

0

172

WT WILLOW TIT

P

P

0

0

0

-81

LT LONG-TAILED TIT

0

4

2

2

0

9

CD COLLARED DOVE

0

1

1

0

-100

104(UK)

Y YELLOWHAMMER

0

1

1

0

-100

-56

CT COAL TIT

0

2

1

2

100

-13

GC GOLDCREST

0

2

1

0

-100

-51

GO GOLDFINCH

0

P

0

0

0

-28

K KESTREL

0

P

0

0

0

-36

SD STOCK DOVE

0

P

0

0

0

63

SG STARLING

0

P

0

0

0

-71

TC TREECREEPER

0

P

0

0

0

-25

WH WHITETHROAT

0

P

0

0

0

49

     

 

       
  Totals

305

332

319

121

-62

 
  Species

32

43

37.5

26

-31

 
  Breeding Species

27

29

28

16

-43

 
Number of Species showing a loss

28

Average Loss

-80

Number of species no longer breeding

17

Number of Species showing a gain

1

Average gain

100

Number of Species gained

0

 

 *   Average population change for England 1975-2000 (25 years) from BTO web site
**  Nightingale range has contracted in England (especially Worcestershire). National population shows little change

#   Grasshopper warbler, poor sample but known large national decline
$   Woodcock UK figures 33 years. Marked decline across all habitats.
P = Present but not proven breeding

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