THE 



JOURNAL 



OF THE 



Natural History Society of Siaiu. 



Volume V. 



Banfifkok. 



Number 2. 



the birds of south-west and peninsular siam. 

 By Herbert C. Robinson, c.m.z.s., m.b.o.u., 



AND 



Cecil Boden Kloss, f.z.s., m.b.o.u. 

 (Continued from page 87). 



ACCIPITRIFORMES. 



OspRKYS, Hawks, Eagles, Kites and Vultures. 



J f No after.shaft to feathers .. .. Pandion hnlini'tus crhtntns. 



(With an aftershaft to feathers . . 



2 f Crown of head feathered 

 I Crown of head naked 



fWith a double notch to the upper mandible 



3 I With a single notch to the upper mandible 

 (with no notch to the upper mandible 



A i Upper parts black ; size smaller . . 

 I Upper parts not black ; size larger 



_ (Size very small; wing under 5 inches 

 \ Size larger ; wing over 6 inches . . 



c J Upper parts reddish brown 

 (Upper parts greyish or blackish 



„ I Lower parts orange-brown ; smaller 

 I Lower parts pinkish white ; larger 



„ f Lores bristly 

 \ Lores feathered 



q (Bill thin, much comi)resscd 

 I Bill norinal 



in adults long . . 



in adults short or lackinj. 



, f, \ Crest i 

 ^" 1 Crest i 



(Tai'sus feathered 



11 



\ Tarsus partially or entirely bare 



Bnza lopliolc's biiniinna. 

 Baza jcrdoni. 



Microhicrax fyingillarius. 



Ccrcluu'is tinnuncula saturata. 



. . Falco sevcrus scvcrus. 

 Falco licrcgrinus calidus. 



Machceraniphus alciniis 



\'rnis ptilorUynchiis ptllorhnnchns. 

 Fcrnis jitiiorJujncJnis riificolUs. 



36 



4 

 5 



8 



11 



9 



10 



12 

 17 



VOL. V, NO. 2, 1922. 



