On the Birds of the Philippine Islands. 457 



5. The old feather now completely changed. May. Same locality. 



6. A new feather coming in : being a good example of the fresh feather 



keeping down its tints to suit and be even with the old feather, 

 which is still undei'going the change exhibited in No. 3. Taken 

 from the same bird as No. 3 feather. 



7. A new feather coming in full richness, assimilating itself to a fully- 



changed old feather. Taken from the same bird as No. 4 feather. 



Method No. III. 



Sanderling, (S [Calidris arenaria). 



Feathers from the back of the neck, showing the change of colour and 

 form which takes place during the assumption of the summer dress. 



Examples of a bird changing from winter into summer plumage without 

 moult, the alteration in the dress being practically due to changes of 

 colour of the same feather. 



8. November or March feather. Crosby, Lancashire. 



9. Taken from a bird killed in the middle of April. The dark markings 



now appearing. 



10. Taken from a bird killed at Shoreham in the middle of May. Change 



complete, showing white tip. 



11. Further change, showing white colours still moving towards ex- 



tremity. (Dress in which the bird might breed.) From a bird 

 killed at Shoreham, Sussex, June. 



12. The feather has now terminated its transition, and will in a few days 



be cast for a new full winter one, same as No. 8. The darker 

 markings have further advanced to the extremity, and a certain 

 amount of wear and tear is plainly visible. In this case the tips 

 are worn. 



XLI. — On the Birds of the Philippine Islands. — Part VII.* 

 The Highlands of Mindoro. By W. R. Ogilviis Grant. 

 With Field-Notes by John Whitehead. 



(Plate XI.) 



A CONSIDERABLE time has now elapsed since the readers of 

 * The Ibis ' have heard anything of Mr. Whitehead's doings 

 in the Philippine Islands. I need hardly say that this 

 indefatigable collector has not been idle during the last year, 

 but through a lamentable accident the entire results of four 



* For Part I. see Ibis, 1894, pp. 40G-411 ; Part H. ibid. pp. 501-522 ; 

 Part III. Ibis, 1895, pp. 10(3-117 ; Part IV. ibid. pp. 249-267; Part V. 

 ibid. pp. 433-472 ; Part VI. Ibis, 1896, pp. 101-128. 



