THE BIRDS OF SOUTH-WEST AND PENINSULAR SIAM. 



25 



COLUMBIFORMES. 



Pigeons. 



/Large birds, wing more than 8 inches 

 (Smaller birds, wing less than 8 inches 



n (With elong.ited hackles on hind neck 

 1 Feathers on hind neck normal . . 



("General colour lead-grey 

 „ I General colour ivory-white 

 , General colour above bronzy green 

 I General colour above maroon or liver-brown 



^/Breast grey, rump uniform with back 



(Breast ochraceous, rump grey contrasting with back 



r Always with metallic bronzy green in plumage 

 5-^ Always with non-metallic green in plum'age. . 

 (Always without any green in plumage 



Calaenas nicobarica. 



Columha livia intennedia. 



. . Myristicivora bicolor. 



Muscadivora aenca. 



Ducula badia and griseicapilla. 



Alsocoinus puniceus. 

 Chalcophaps indica. 



Wing exceeding 7 inches 

 Wing less than 7 inches 



„ f With a magenta cap or magenta wash on crown 

 (With no magenta cap or wash . . 



n/Bill swollen towards tip 

 (Bill slender, not swollen towards tip 



Q J Wing less than 5 inches 

 i Wing more than 5 inches 



, f, f Middle feathers of tail green 

 ( Middle feathers of tail grey 



11 



Tibial plumes bright chrome yellow 

 Tibial plumes buff or dull yellow 



,^ fPale apical band to tail J inch or more broad 

 " [ Pale apical band less than J inch broad 



Butreron capelU. 



Ptilonoims jambu. 



Treron citrvirostra nipalcnsis. 



. . Treron olax. 



Treron fuhncoUis. 

 Treron pompadtra pliayrei. 



Treron bicincta praetermissa. 

 Treron vernans. 



13 



14 



With a black collar on nape 

 With no black collar 



I Collar narrow and entirely black . . 

 ( Collar broad and spotted with white 



(Wing about 7 inches 



15- Wing about 5'5 inches 



i Wing about 4 inches 



Oenopopclin tranquebarica hiuiiilis. 

 Strepitopelia suratensis tigrina. 



Macropiigia lepfograunnica. 



Macropiigia ruficeps. 



^ .. Geopelia striata. 



6 

 13 



10 



11 

 12 



14 

 15 



VOL. V, NO. 1, 1921. 



