the Forth Naturalist Historian - Forth Naturalist and Historian ...
the Forth Naturalist Historian - Forth Naturalist and Historian ...
the Forth Naturalist Historian - Forth Naturalist and Historian ...
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Bird Report 1998 19<br />
Month 1996/7 1997/8 1998/9<br />
September 1583 1756 1494<br />
October 2039 2454 2082<br />
November 3235 3037 2633<br />
December 3955 3396 2710<br />
January 4477 3332 2599<br />
February 2771 2940 2133<br />
March 1646 1930 1338<br />
Total 19706 18845 14989<br />
This season’s numbers are <strong>the</strong> lowest in 5 years, but this is largely due to low<br />
figures from Gartmorn Dam where <strong>the</strong> previous regular counter has left <strong>the</strong><br />
district. If Gartmorn is excluded <strong>the</strong>n <strong>the</strong> o<strong>the</strong>r waters gave <strong>the</strong> best season<br />
ever. Whe<strong>the</strong>r <strong>the</strong>re has been a real relocation of birds needs to be checked in<br />
future seasons.<br />
Turning to individual sites, <strong>the</strong> top ten along with monthly averages are<br />
listed below:- (previous season’s figures in brackets)<br />
Site Average<br />
1. (2) Gart Complex 433 (366)<br />
2. (1) Gartmorn Dam 350 (996)<br />
3. (4) Lake of Menteith 319 (267)<br />
4. (3) Airthrey Loch 295 (279)<br />
5. (5) Loch Earn 265 (206)<br />
6. (7) Blairdrummond Park 189 (162)<br />
7. (12) Vale of Coustry 182 (124)<br />
8. (9) Doune Ponds 158 (149)<br />
9. (12) L. Dochart-Iubhair. 150 (155)<br />
10. (30) L. Watston 113 (52)<br />
The above table excludes sites where mallard are reared <strong>and</strong> released for<br />
shooting.<br />
With <strong>the</strong> striking exception of Gartmorn most sites show modest increases<br />
with Lake of Menteith having <strong>the</strong> best results for 16 years.<br />
Some indication of <strong>the</strong> degree of winter immigration by different species<br />
into <strong>the</strong> region can be got by comparing <strong>the</strong> September count as a percentage<br />
of <strong>the</strong> peak for that winter for each of <strong>the</strong> seasons 1997/8 <strong>and</strong> 1998/9. These<br />
figures are 74 % <strong>and</strong> 83 % for Mallard <strong>and</strong> 61 % <strong>and</strong> 87 % for Tufted Duck, both<br />
species with large Scottish breeding populations. However <strong>the</strong> September<br />
contribution for three ducks that are scarce breeders is much smaller – Wigeon<br />
5 % <strong>and</strong> 10 %, Pochard 10 % <strong>and</strong> 7 %, Goldeneye 0.5 % <strong>and</strong> 0 %. Teal scores at<br />
34 % & 23 %, this probably exaggerates <strong>the</strong> local bird contribution since <strong>the</strong>re<br />
is significant immigration in September.<br />
Linear Water Features: Rivers & Canals<br />
This season all of <strong>the</strong> canals in <strong>the</strong> region were counted but <strong>the</strong> river length<br />
decreased slightly from 118 to 104 km. Overall <strong>the</strong>re were on average 13.5 birds<br />
per Km.