GARDEN BIRD SURVEY
The Garden Bird survey last winter took place between November 2001 and March 2002. A total of 19 completed forms have been received, which is a very disappointing decrease of 11 on last year, which admittedly was a bumper year. Nevertheless, approximately 50 forms were handed out, so if any members have not yet handed in completed forms, please could you let me have them as soon as possible. To those who have completed the survey and have returned the forms, many thanks, and please continue your excellent support of our survey, which over the long term helps us to monitor changes in the populations and species of birds using our gardens over the winter period.
The distribution of gardens was as follows:-
|
Urban |
Suburban |
Rural |
|
1 |
11 |
7 |
|
Small |
Medium |
Large |
|
3 |
12 |
4 |
The medium sized suburban garden remains the most numerous contributor. A good number of rural gardens helps to account for the diversity of recorded species. Conversely, the virtual absence of urban gardens may account in part for the decline in numbers of House Sparrow and Starling in our survey.
The total number of species recorded this year was 48, i.e. a decrease of 3 over last year and no doubt due to the decrease in the number of gardens. A garden in Whittle again recorded the highest number (35), and the typical count was again between 20 & 22.
The top twenty has been produced as previously by weighting the scores according to frequency of visit, i.e. 3 points for daily visitors, two for frequent visitors and one for occasional visitors. Therefore, although seven species were recorded in all 19 gardens, this methodology enables us to establish a more accurate table, and gives a better indication of the species most likely to be seen at any given time. What the table doesn't show is abundance, and as last year, the most abundant species are still Starling and House Sparrow, although they only occupy positions 11 and 12 respectively. Four gardens failed to record either House Sparrow or Starling, which accounts for the continuing slide in the table of both species. Starlings roam around in fairly large flocks, but seem to spend less time in individual gardens than they once did. Furthermore, they seem to prefer bread and kitchen scraps, rather than the seed that is probably provided in most of our gardens. Can I suggest that if you wish to see Starlings in your gardens in winter, that you consider providing bread and other scraps as well as seed.
We have now been doing the survey for several years, so I thought that it might be of interest to compare this year's results with those of earlier years, in addition to last year's. I have therefore introduced additional columns showing the respective positions for 1996 and 1998 to try and identify trends over the period. Most noticeably, the much publicised decline of the House Sparrow is confirmed. It has dropped from 6th position to 11th over the period. The long term trend for the Dunnock also seems to be downwards, which confirms impressions from this particular winter when the species did not seem to be quite as obvious as usual. Also on the way down, which might be more of a surprise, is Magpie. Upwardly mobile are the finch species (Chaffinch, Greenfinch and Goldfinch) and Coal Tit. This presumably has a lot to do with the proliferation of Sunflower seed as a bird table food item. Certainly, Bullfinch seem to have discovered this food source, and I would not be surprised to see them enter the top twenty in the next couple of years. Long -tailed Tits seem to have stabilised at around No. 14 over the last three or four years, and Song Thrush seems to be continuing its recovery.
|
There was less natural food available this winter, so that in general it was a good winter at garden feeding stations, with numbers of Coal Tit, Siskin, Brambling and Jay well up on last year, when there was plenty of natural food in the countryside. Conversely, it was a poor year for Goldfinch. Perhaps the lack of natural food had resulted in a more long distance movement of the species away from our area. It seems to have been quite a good winter for Blackcaps. |
|
Species which didn't make it into the top twenty were as follows:-
Great Spotted Woodpecker and Nuthatch (8 gardens), Bullfinch, Carrion Crow and Mistle Thrush (7), Pied Wagtail (6), Goldcrest, Black-headed Gull and Rook (5), Blackcap and Fieldfare (4), Brambling, Redwing, Tawny Owl, Moorhen and Pheasant (3), Treecreeper, Mallard and Lesser Black-backed Gull (2), Tree Sparrow, Jackdaw, Reed Bunting, Grey Wagtail, Kestrel, Feral Pigeon, Chiffchaff, Common Gull and Redpoll (all 1 each).
|
Position |
Species |
Weighted score |
Gardens visited |
|||
|
2002 |
2001 |
1998 |
1996 |
|||
|
1 |
1 |
1 |
1 |
Blackbird |
57 |
19 |
|
2= |
2 |
2 |
2= |
Blue Tit |
56 |
19 |
|
2= |
3 |
4 |
2= |
Robin |
56 |
19 |
|
4 |
4 |
3 |
5 |
Great Tit |
54 |
19 |
|
5 |
6 |
6 |
7= |
Chaffinch |
53 |
19 |
|
6 |
5 |
7 |
4 |
Dunnock |
52 |
19 |
|
7 |
10 |
9 |
10 |
Collared Dove |
49 |
19 |
|
8 |
12 |
13 |
13 |
Coal Tit |
45 |
18 |
|
9 |
11 |
10 |
11 |
Greenfinch |
45 |
16 |
|
10 |
7 |
5 |
9 |
Magpie |
44 |
17 |
|
11 |
9 |
8 |
6 |
House Sparrow |
38 |
15 |
|
12 |
8 |
11 |
7= |
Starling |
35 |
15 |
|
13 |
13 |
12 |
14 |
Wren |
32 |
16 |
|
14 |
14 |
14 |
20 |
Long-tailed Tit |
28 |
15 |
|
15 |
16 |
20 |
12 |
Song Thrush |
26 |
15 |
|
16 |
15 |
17 |
18 |
Goldfinch |
23 |
12 |
|
16 |
18 |
16 |
20 |
Jay |
2 |
12 |
|
18 |
19 |
15 |
- |
Woodpigeon |
23 |
9 |
|
19 |
- |
18 |
- |
Siskin |
22 |
13 |
|
20 |
- |
19 |
- |
Sparrowhawk |
18 |
14 |
Thanks once again to everyone who took the trouble to complete and return forms for the survey.