167 



north along the line taken hy the first, reinforced the Welsh 

 birds and reached Yorkshire on May the 10th. The records 

 indicate that the few birds found in the east were probably 

 stragglers from this immigration. 



This seems to have been followed by a fourth and last 

 immigration, which took place about May the 13th and 14tb, 

 and apparently reinforced the numbers already settled in the 

 west and furnished the breeding-birds of the more northern 

 parts of Great Britain. Some of these birds passed through 

 the Isle of Man about May the 18th. 



Chkonological Subimary of the Records. 



April 8. Essex. 



,, 9. Dorset. 



„ 16. Staffordshire. 



,, 17. Devon. 



,, 18. Hants lights. 



„ 20. Wiltshire. 



„ 23. Shropshire and Lancashire. 



., 29. Yorkshire and Dumfries. 



„ 30. Somerset and Durham. 

 May 1. Dorset. 



,, 2. Worcester. 



„ 3. Somerset, Cheshire and the Isle of Man. 



. „ 4. Merioneth, Cheshire and Northumberland. 



„ 5. Cambridge. 



,, 6. Wiltshire, Glamorgan and Denbigh. 



„ 7. Cornwall, Surrey, Cardigan, Lancashire and 

 Durham (settled). 



„ 8. Hants and Shropshire. 



9. Oxford. 



,, 10. Cardigan (several), Radnor, Derby, Yorkshire 

 (great increase) and Northumberland (nest- 

 ing). 



,, 12. Oxford and Radnor. 



„ 14. Wiltshire (several). 



