cheshire swan study group report · 2021. 2. 3. · 2015 17 11 49 27 55 2016 17 14 53 21 39 2017 17...

Photo by David Cummings

Cheshire Swan Study

Group Report

2020

by

David Cookson

RINGING DATA 2020

MUTE SWANS

CYG

NETS

SECOND Y

EARS

THIR

D Y

EARS

ADULT

S

TOTAL

RIN

GED

RETR

APS

CONTR

OLS

RINGING SITES

ACRE DELL,CONGLETON 2 2 4 1

AUDLEM AREA 9 9

BOTTOM FLASH,WINSFORD 1 4 8 13

CREWE AREA 6 6

MACCLESFIELD AREA 3 3

MIDDLEWICH CANAL 3 5 1 4 13 1

NANTWICH AREA 19 1 1 9 30 2

NORTHWICH AREA 2 1 3 1

NORTH WALES 1 1

SPIKE ISLAND 2 3 3 8 2

STAFFORDSHIRE 9 1 10

WARRINGTON AREA 1 1

TOTALS 54 14 5 28 101 4 3

TOTAL OF DEATHS REPORTED = 25

Email David Cookson (Leader) = [email protected]

Website = https://cheshireswanstudygroup.wordpress.com/

mailto:[email protected]

Comparative Breeding Results for the Borough of Crewe and Nantwich

TOTAL

PAIRS

TOTAL

PAIRS WITH

EGGS

TOTAL

CYGNETS

HATCHED

TOTAL

CYGNETS

FLEDGED

%

FLEDGED

1999 26 19 57 40 70

2000 32 21 69 40 57

2001 36 16 60 34 56

2002 35 17 82 45 54

2003 27 15 48 33 66

2004 29 13 54 33 61

2005 24 19 74 38 51

2006 22 15 43 25 58

2007 23 15 30 16 53

2008 24 16 56 33 59

2009 26 15 41 25 61

2010 22 10 35 24 68

2011 21 15 63 33 52

2012 22 14 23 20 87

2013 23 13 46 15 32

2014 21 11 47 28 60

2015 17 11 49 27 55

2016 17 14 53 21 39

2017 17 14 53 22 42

2018 16 12 33 18 55

2019 16 12 45 23 51

2020 13 13 60 30 50

BREEDING SITE DATA

TOTAL TOTAL

CYGNETS CYGNETS

Crewe & Nantwich Area HATCHED FLEDGED

1 Aquaduct Marina, Church Minshull = 6 > 5 4

2 Baddiley Meres, Nantwich = 8 > 2 2

3 Canal, Barbridge = 9 > 8 8

4 Mill End Pool,Audley = 7 > 4 3

5 Nantwich Boating Lake = 6 > 3 3

6 River Weaver, Nantwich = 4 > 2 2

7 Swanley Bridge Marina, Nantwich = 5 5

8 Winterley pool, Sandbach = 2 > 1 1

9 Woolfall Pool,Hankelow = 4 > 0 0

10 Wychwood Park,Weston,Crewe = 3 > 2 2

TOTALS = 54 > 32 30

OTHERS SITES

1 Anderton Marina,Northwich = 6 6

2 Arclid SQ,Sandbach = 6 > 0 0

3 Comber Mere near Whitchurch = 4 > 3 3

4 Holly House Pool,Congleton = 6 > 4 4

6 Canal,Middlewich 2 = 6 6

7 Moss Hall Pool,Audlem = 6 6

8 Pikelow Farm, Marton, Macclesfield = 11 > 5 5

9 Quoisley mere,Whitchurch = 4 > 1 1

10 Redes Mere near Macclesfield = 6 > 4 4

TOTALS = 55 > 35 35

RSPCA Stapeley Grange Wildlife Centre

Swan Report 2020 The number of swans admitted at the centre was fairly similar to the previous year with a total of 371 admitted in 2020. The number of swans admitted from Cheshire was down again with just 74 admitted, compared to 79 in 2019. Staffordshire was the second most common county with 52 admissions seen this year. This year fishing litter has been an increasing problem. When broken line is left in the water or on the river bank it then causes serious injury or even death for our waterfowl. In 2020 we had one of our resident swans from Queens Park, Crewe that came in with a common line injury we call a ‘chinstrap’. This injury is exactly as it sounds the line gets caught around the lower beak and without removal can result in the loss of the lower beak. Fortunately this individual was caught up by one of the ‘Friends of Queens Park’ who constantly monitor the waterfowl for any injuries or disease. This time the swan had been caught early and luckily we were able to remove the line from the lower beak and after a couple of weeks recuperating on our pools it was returned to it’s mate. So please remember if you are ever out fishing or see discarded fishing tackle, collect it up and dispose of in the correct manor. We even have a fishing litter bin here at Stapeley for people to discard of their rubbish and we can dispose of it correctly. The centre is always looking for more release sites for cygnets, if you have a large body of water with an island and access for grazing then please email: [email protected] As always, we would like to thank David Cookson for all his help over the last year and for the ringing he has done here at Stapeley. We would also like to say a big thank you to all the other organisations and individuals, who have helped in the rescue and release of the swans that have been in the care of the centre over the past 12 months. Rob Whitehouse Wildlife Assistant RSPCA Stapeley Grange Wildlife Centre

Total admissions Cheshire admissions

Abnormal Behaviour 7 3

Attacked by other animal 20 4

Caught/entangled 17 2

Collision 41 7

Disease 4 2

Fishing litter 43 11

Grounded 23 7

Injury (cause uncertain) 79 19

Oiled 37 0

Orphan 8 1

Other 67 16

Weakness 25 2

Total 371 74

2019 RAS Results

RAS Project 367: Cheshire - Mute Swan Thank you for undertaking a Retrapping Adults for Survival project, helping us to better understand the causes of population change. The results of your study are presented here, alongside the latest national trend for comparison. National survival trends are published as part of the BirdTrends report (www.bto.org/birdtrends) and on the RAS website (www.bto.org/ras-results).

Your Project Trend

National Trend

Summary Results

Estimate of average adult survival across all projects:

Male annual adult survival rate: 70% Female annual adult survival rate: 75%

Estimate of average adult survival from your project:

Male annual adult survival rate: 54% Female annual adult survival rate: 55%

Estimate of your average annual recapture probability:

Male recapture probability: 68% Female recapture probability: 74%

Trend Analysis

Yours is one of four active projects for Mute Swan. The national trend is generated from four current projects. The quality of the national trend is considered to be ‘Moderate’ and the long-term trend is stable, which is the same for the BBS trend. The mean survival rates for Mute Swan are 70% for males and 75% for females. The mean re-encounter rates are higher for females than males.

The survival of your birds is somewhat lower than the national average and has dropped three years in succession since the high point of 2015. The confidence limits are quite good, so this drop looks to be accurate and the trend in 2015 looks similar to the national average.

Notes

* You may have noticed the graphs end at 2018; this is because the RAS programmes calculate survival between years, so the last point is the survival from 2018 to 2019.

* The graphs show “Apparent Adult Survival”, defined as the probability that an adult bird alive in the previous year survives and returns to the study area. The analysis accounts for the fact that birds which are present may not be seen every season, but birds permanently emigrating from the study area will be presumed dead, thus the true survival rate may be slightly higher than the figures presented here.

* The dotted lines show the upper and lower 95% confidence limits around the average estimate (solid line and points). The closer these lines are to the solid line, the more confidence we have in the accuracy of the survival rates.

Thank you for your continued support for RAS

RAS is supported by a partnership between the BTO and the Joint Nature Conservation Committee (JNCC) on behalf of the country agencies (Natural England, Natural Resources Wales, Scottish Natural Heritage and the Department of Agriculture, Environment and Rural Affairs, Northern Ireland). It is also part of the BTO Ringing Scheme which is funded by the BTO/JNCC Partnership, The National Parks and Wildlife Service (Ireland) and the ringers themselves.

Tel: 01842 750050 Email: [email protected] Website: www.bto.org/ras

about:blank

RETRAPPING ADULTS FOR SURVIVAL RESULTS

From To Lower Limit Estimate Upper Limit2013 2014 0.37 0.58 0.75

2014 2015 0.35 0.53 0.7

2015 2016 0.45 0.7 0.87

2016 2017 0.36 0.56 0.74

2017 2018 0.3 0.47 0.65

2018 2019 0.23 0.39 0.59

SITE COUNTS - January to April 2020

Acre

Dell

Po

ols

, C

ong

leto

n.

Bu

rleyd

am

poo

l n

ea

r W

hitch

urc

h.

Co

mb

er

Me

re n

ea

r W

hitch

urc

h.

Ch

olm

ond

ele

y E

sta

tes.

Co

ole

Pila

te n

ea

r N

antw

ich

.

Do

dd

ingto

n M

ere

nea

r N

antw

ich

.

Fro

dsha

m S

ludg

e p

oo

l.

Mid

dle

wic

h c

an

al,M

iddle

wic

h.

Ne

um

ann

s F

lash,

No

rth

wic

h.

Sa

nd

ba

ch F

lashe

s.

Sa

nke

y V

alle

y C

P,

Wa

rrin

grt

on.

Wo

ols

ton E

ye

s N

R,

Wa

rrin

gto

n.

January

1st 10

8th 9

12th 8 18 4 12 24 10 49

19th 78

22nd 62

26th 79 7 14 40

30th 14

February

2nd 14

9th 6 15 17 4 34

11th 11

14th 80 20

17th 2 17

24th 1 3 21

March

1st 72 22

8th 79 1 2 26 17 21 4

19th 15

22nd 72

28th 40 5

April

5th 8 8 2

8th 62 20 4 9

18th 62 4 9

22nd 27

SITE COUNTS - May to August 2020

Acre

Dell

Po

ols

, C

ong

leto

n.

Bo

tto

m F

lash,

Win

sfo

rd.

Bu

rleyd

am

poo

l n

ea

r W

hitch

urc

h.

Co

mb

er

Me

re n

ea

r W

hitch

urc

h.

Ch

olm

ond

ele

y E

sta

tes.

Co

ole

Pila

te n

ea

r N

antw

ich

.

Do

dd

ingto

n M

ere

nea

r N

antw

ich

.

Fro

dsha

m S

ludg

e P

ool.

Mid

dle

wic

h c

an

al, M

iddle

wic

h.

Ne

um

ann

s F

lash,

No

rth

wic

h.

Sa

nd

ba

ch F

lashe

s.

Sa

nke

y V

alle

y C

P,

Wa

rrin

gto

n.

Sp

ike

Isla

nd

, W

idn

es.

May

3rd 62 11 8

10th 10 5 15 14 22 11 9

18th 64 20

20th 26 23 12

27th 36

31st 61

June

5th 61 47 15

7th 64 38 42 8 14 5 25

8th 4 45

15th 55

20th 7 56

24th 11 58 65

29th 8 33

July

1st 57

4th 8

5th 56 27 59 5 12 7 24

15th 63

19th 12

21st 80

22nd 63

27th 8 19

29th 28 63 67

August

5th 61

7th

12th 43

20th 33

23th 67 21 40 15 17

27th 18

29th 15 67

ABER OGWEN,BANGOR = 151 = 14-7-20

SITE COUNTS - September to December 2020

Acre

Dell

Po

ols

, C

ong

leto

n.

Bo

tto

m F

lash,

Win

sfo

rd.

Bu

rleyd

am

poo

l n

ea

r W

hitch

urc

h.

Co

mb

er

Me

re n

ea

r W

hitch

urc

h.

Ch

olm

ond

ele

y E

sta

tes.

Co

ole

Pila

te n

ea

r N

antw

ich

.

Do

dd

ingto

n M

ere

nea

r N

antw

ich

.

Fro

dsha

m M

ars

h.

Mid

dle

wic

h c

an

al, M

iddle

wic

h.

Ne

um

ann

s F

lash,

No

rth

wic

h.

Re

de

s M

ere

nea

r M

accle

sfield

.

Sa

nd

ba

ch F

lashe

s.

Sa

nke

y V

alle

y C

P,

Wa

rrin

gto

n.

Sp

ike

Isla

nd

, W

idn

es.

Wo

ols

ton E

ye

s N

R,

Wa

rrin

gto

n.

September

1st 13

3rd 15

12th 14 16 13 27 74

13th 14 3 13 30 22

16th 10

20th 63 15 9 9 23 20 16

23rd 5 59

28th 8 1 24

October

1st 10

8th 14 28 72

11th 23

16th 16

18th 41 4 3 6 11 16 12 35

21st 61 13

28th 35 16 38

November

5th 11

8th 39

11th 15

15th 73 23 30 18 7 5 22 10 40

18th 11 55

23rd 19

25th 62 9

29th 59

December

4th 18 8

13th 5 28 9 3 4 6 20 13 10 44

17th 2

21st 1 3 10

23rd 66

24th 64 2 33

28th 65

POPULATION TRENDS 2000 to 2020

Crewe and Nantwich Borough Council Area

YEARS WINTERING YEARS SUMMER

FLOCK MOULTING

COUNTS FLOCK

COUNTS

2000/2001 167 2000 118

2001/2002 181 2001 141

2002/2003 111 2002 148

2003/2004 93 2003 106

2004/2005 88 2004 88

2005/2006 110 2005 108

2006/2007 50 2006 112

2007/2008 65 2007 63

2008/2009 49 2008 66

2009/2010 70 2009 74

2010/2011 46 2010 90

2011/2012 82 2011 100

2012/2013 54 2012 92

2013/2014 73 2013 92

2014/2015 41 2014 86

2015/2016 62 2015 69

2016/2017 57 2016 115

2017/2018 73 2017 78

2018/2019 53 2018 56

2019/2020 37 2019 112

2020/2021 NA 2020 97

Acre Dell Pools near Congleton

WINTER SUMMER

FLOCK MOULT

COUNTS FLOCK

COUNTS

2011/2012 70 2011 52

2012/2013 50 2012 44

2013/2014 50 2013 41

2014/2015 68 2014 49

2015/2016 58 2015 49

2016/2017 66 2016 56

2017/2018 56 2017 78

2018/2019 84 2018 55

2019/2020 77 2019 48

2020/2021 64 2020 62

All totals are resulting from mean counts.

SELECTED MOVEMENTS

RING AGE RINGING PLACE RINGED SIGHTING PLACES SEEN KM

S

NO SEX DATE DATE

ABNT 7 F 11/09/1992 The Mere,Ellesmere,Salop 01/01/2020 Abergele,North Wales

(W) 09/09/2020 Aber Ogwen near Bangor NW 87

CV23 3 M 06/11/2007 Styperson Pool,Adlington 23/04/2020 Ventnor Boat Museum near Daventry 170

Near Stockport

CBS1 1 M 22/08/2011 Canal,Shady Oak,Tarporley 09/09/2020 Aber Ogwen near Bangor NW 93

CP34 6 F 24/06/2006 Wesport Lake,Stoke 12/09/2020 Spike Island, Widnes 48

CDB5 3 F 09/11/2012 Canal, Middlewich 09/09/2020 Aber Ogwen near Bangor NW 109

CDD4 5 F 04/01/2013 Cheswardine Hall, near 09/09/2020 New Cut near Lowestoft,Norfolk 253

Market Drayton

CJP2 3 F 11/11/2016 Poole House Pool,Wybunbury 21/04/2020 Poole House Pool,Wybunbury

09/09/2020 Aber Ogwen near Bangor NW 108

CJV4 6 M 23/04/2017 Acre Dell Pools,Congleton 09/01/2020 Sandbach Flashes,Sandbach 6


CLB8 6 M 28/01/2018 Canal, Middlewich 09/09/2020 Aber Ogwen near Bangor NW 109

CLN8 6 F 11/02/2018 Acre Dell Pools,Congleton 19/10/2020 Bangor Harbour, North Wales 108

CLY6 1 M 15/09/2018 Mill End Pool, Audley 23/02/2020 Youlgrave near Matlock. 44

12/09/2020 Strewsbridge,West Helem, 67

Derbyshire

CNV5 1 M 01/09/2019 Pikelow Farm Pool,Marton, 29/05/2020 Acre Dell Pools, Congleton 3

Macclesfield 03/07/2020 Acre Dell Pools, Congleton 3


CPC1 1 M 14/09/2019 Mill End Pool, Audley 26/04/2020 Acre Dell Pools,Congleton 14

29/07/2020 Spike Island,Widnes 41

06/09/2020 Conwy Estuary, North Wales 105

CPD2 5 M 08/03/2020 Canal, Middlewich 16/07/2020 River Conwy, North Wales 94


MOVEMENTS INTO CHESHIRE

W42563 3 29/10/2016 Staines-upon-Thames,Surrey 04/01/2020 Spike Island, Widnes 261

W46401 1 18/08/2019 Llanfairfechan, North Wales 27/01/2020 Neumanns Flash,Northwich 99

LONGEVITY REPORT


S

NO SEX DATE DATE

CA09 5 F 20/01/2001 Winterley Pool,Sandbach 10/06/2001 Tatton Park,Knutsford 22

26/09/2014 River Dane, Croxton, 10

Middlewich

01/07/2020 Canal in Middlewich 9

AGED = 20 YEARS

CA15 5 F 20/01/2001 Winterley Pool,Sandbach 12/09/2020 Neumanns Flash,Northwich 25

AGED 20 YEARS

CN03 3 M 18/09/2005 Stypersons Pool, 29/07/2020 Woolston Eyes Bed 3,

Adlington nr Stockport Warrington 58

AGED = 15 YEARS

CN13 1 M 12/10/2005 Daneside CP,Congleton 22/07/2020 Pennington Flash, Leigh, Lancs 51

AGED 15 YEARS

CN74 3 M 06/12/2005 Nantwich Boating Lake 19/03/2006 Rose Cottage,Eccleshall 30

Staffs

21/10/2020 Acre Dell Pools,Congleton 22

AGED 15 YEARS

CAP7 1 M 09/08/2000 River Dove,Sudbury, 01/01/2005 Pikelow Farm Pool,Marton 46

Derbyshire Macclesfield

TO

01/11/2020 Pikelow Farm Pool,Marton 46

Macclesfield

AGED 20 YEARS

X4L 1 M 31/07/2003 Wychnor Park, Alrewas, 28/12/2007 Acre Dell Pools,Congleton 60

(Y) near Rugeley,Staffs TO

21/10/2020 Acre Dell Pools,Congleton 60

AGED 17 YEARS

WHOOPER REPORT UPDATE


S

NO SEX DATE DATE

BLS 5 M 11/01/2019 Canal, Middlewich 11/02/2019 Canal, Middlewich

(W) TO

01/04/2019 Canal, Middlewich

01/04/2019 Neumanns Flash, Northwich 10

TO

10/04/2019 Neumanns Flash, Northwich 10

01/12/2019 Park Farm, Credenhill,Herefordshire 125




25/10/2020 RSPB,Old Moor,Dearne Valley,Rotherham 80

14/11/2020 Bescar,Scarisbrisk,Lancashire 58




RINGING TOTALS AUGUST 1988 to 2020

YEAR Cygnets Adults Totals YEAR Cygnets Adults Totals

1988 35 16 56 2005 94 25 151

1989 55 38 140 2006 87 36 174

1990 84 32 169 2007 62 32 144

1991 90 21 140 2008 57 12 84

1992 85 12 128 2009 71 15 112

1993 91 11 118 2010 75 24 134

1994 116 13 166 2011 77 29 151

1995 133 36 228 2012 71 13 124

1996 149 37 263 2013 66 18 129

1997 194 34 310 2014 49 16 86

1998 155 38 259 2015 72 31 138

1999 144 24 229 2016 68 27 134

2000 77 23 191 2017 55 44 124

2001 72 16 177 2018 63 53 152

2002 72 33 162 2019 69 41 123

2003 39 26 104 2020 54 28 101

2004 35 17 102

Total Swans Identified in Cheshire in 2020 = 354

Total Swans Identified at Acre Dell Pools,Congleton in 2020 = 99

Total Swans Identified at Spike Island, Widnes in 2020 = 40

cheshire swan study group report · 2021. 2. 3. · 2015 17 11 49 27 55 2016 17 14 53 21 39 2017 17...

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