Resources for data collection
The following is a selection of downloadable PDFs that contain useful information. Some are intended to aid with the collection of biometric data, such as moult codes and brood patch scores, whilst others are intended as reference materials to help in the field. Further information about what additional biometric information we recommend taking can be found on the Additional biometrics page.
|Ring size list||534 Kb|
|Errata - Identification Guide to European
Passerines - Svensson
|Ageing and sexing Grey Partridges|
Migration blog (22nd – 28th October)
Many bird watchers have been lamenting on what a poor autumn it has been so far for migration, with numbers of common, scarce, and expected rare species down on what would normally be expected.