R. Haio Thomas 'iO.') 



Series 2 in the pedlyree. 



In the Foi-mosan-Versicolor cross (}\ Z. S. 1912, pp. 540-542) the 

 wild nervous tenipcrainciit is transmitted to his /"i "CD" and h\ 

 "CD1>" t'enialc offsprinj^ by thi' male Vcrsicoloi-, and aMiontfst the 

 F.^ inter se Series 2", Versicolor teiin)erainent is found eoi-related with 

 Versicolor plumage and Foi'mosanus temperament coupled with Foi-- 

 mosanus plumage. In this cross the records of habit in the youngest 

 chicks show the same coupling, tlu^ darkest down being allied to the 

 more nervous, the palest down to the bolder temperament. It may 

 here be mentioned that when nest-dry the chicks are graded light, 

 medium, dark, with whitit, red or black thread tied round the leg, the 

 threads being cut off and renewed as the leg grows, until the bird is six 

 weeks old, of age to be rihged, thus the colour and habit are traced 

 from liirth. In the chick stage dimension also was linked with colour 

 and habit, the darkest chicks were the smallest (Versicolor) and those 

 with tht' jialest down the largest (Ft)rmosanus). In Series 2 the colour 

 of the iris was observed and proved to be another character of the female 

 of his race transmitted by the male pjireut to his female offspiing'. 



Challenge or Call. 



Conversi itiaiKil Voice. 



Gen. vyctJienienis j" ) Challenge a low note 



Gert. iiyctheineniK ^ ) Conversational voice high tone 



Gen. .iwinhiiei J" "j Challenge a high note : 4 or 5 tones 



^ higher than the male Silver 



Gen. muinhoei % J Conversational voice, a low mutter 



Series 1, V and T"' i-ecords establish the fact that plumage, dimension 

 and call in the adult birds are invariably correlated, and that habit and 



' Since writing "The Transmission of Secondary Sexual Characters in Plieaeants," 

 published April, 1914, in Journal of Genetics, Vol. iii., I had occasion to examine the crest 

 of an immature male Silver passing through the transition to the adult plumage, most of 

 the feathers were black as the adult, but amongst them was one which resembled the male 

 Swinhoe adult crest in structure and form and was of a brown colour mottled with fulvous 

 resembling in fact one or two of the ".-i " series female crests which had been pronounced 

 hybrid ; now if the crest of the immature male Silver had been examined earlier it is 

 possible that more of these feathers might have been found. In any case the discovery 

 of this feather modifies the presumption that Fo, F-^ and 1<\ female crests were liybiid, 

 and might indicate that the mutation in the crests was due to pattern-translerence by the 

 female parent to her female offspring of the male transitional plumage of her species. 



