A. G. LEIGH: PLUMAGES. 73 



II. 



By A. G. Leigh. 



In connection with Mr. Dewar's note on the change of the 

 mouth-coloration of the nestling Yellow Bunting (Vol. IV., 

 p. 23) it is interesting to note that a similar change takes place 

 in the Tree-Pipit [Anthus trivialis) ; in a previous note (Vol. 

 III., p. 154) I stated that the mouth-coloration was lemon- 

 yellow, changing in four days' time to deep carmine ; this 

 year I have examined nestlings from the day they hatched, 

 and the change was as follows : — Newly hatched, deep orange ; 

 two days old, pale orange ; four days old, turning crimson ; 

 six days old, crimson ; seven days old, full carmine. There 

 was no sign of spots at any age, but at four days old the tongue- 

 spurs were noticeably lighter. {N.B. — The nestlings examined 

 last year were probably about two days old). 



SEDGE-WARBLER, Acrocephalus phragmitis (Bechst.). 

 Down. Absent. 



Coloration of Mouth. Pale orange, black spots on tongue- 

 spurs. 



ROOK. Corvus fugilegus, L. 

 Down. Colour. — Dusky grey ; skin of body black. 

 Distribution. — Humeral, spinal, ulnar and femoral. 



Coloration of Mouth. Bright crimson ; tongue-spurs pale 

 orange. 



