Vol. xxv.] 102 



3. Nest containing three eggs of the Reed- Warbler and 



one egg of the Cuckoo (Cuculus canorus). 



4. A nest having one edge built very much higher than 



the other ; the female bird in the act of slipping 

 on to the nest. 



5. Same nest : bird stretching out her wings owing 



to the heat. 

 6-8. Ditto : showing both birds at the nest. 

 9. Young Cuckoo, a fortnight old, in Reed-Warbler's 



nest. 



10. Nest with three young ; the female approaching. 



11. Ditto : the female feeding its young. 



12. Ditto: the female looking round after having fed the 



young. 



13. Ditto : the female removing droppings from the nest. 



14. Summary of the history of this nest, showing that 



the first egg was laid on the 16th of July, and that 

 the last young bird left the nest on the 11th of 

 August. Period, 27 days. 



B. Nests placed in bushes. (Mr. Bickerton explained that 

 during 1909 he had found twenty-one nests in the 

 same nesting-area. Of these, fifteen were placed in 

 the reeds, and six in bushes adjacent to, or not far 

 removed from, the reed-beds.) 



15. Nest built in an elder-bush. 



16. Nest built in a young sycamore-tree, six feet from 



the ground. 



17. Nest built in a willow-tree. 



18-20. The same nest with young: female bird ap- 

 proaching. 

 21 & 22. Ditto : both birds at the nest. 



23. Ditto: parent feeding the young with a white butterfly. 



24. Ditto: parent examining the sanitary condition of 



the nest after having fed the young. 



25. The same : showing female in an extraordinary 



attitude. 

 2G-31. The same nest : a series showing- one of the young 



