British Wildlife 02.3 February 1991
![](https://www.britishwildlife.com/wp-content/uploads/2023/03/2.3.png)
February 1991
This issue includes
Population Trends in British Barn Owls – The Native Crayfish and Threats to Its Existence – Land, Wlidlife and Conservation in the Cairngorms – Identification - Tracks and Signs of the Weasel Family
In this issue:
- 131 Population Trends in British Barn Owls – a review of some possible causes
- 141 The Native Crayfish and Threats to its Existence
- 152 Land, Wildlife and Conservation in the Cairngorms
- 164 Reserve Focus – Thorne Moors National Nature Reserve
- 167 Identification – Tracks and Signs of the Weasel Family
- 172 Wildlife reports
- 185 Conservation news
- 192 Twitcher in the Swamp