11 [Vol. xxxvii. 



of two birds. The other four, which were shown as two 

 pairs close together, were found in two nest-hollows 

 separated by a few inches only, and these two pairs were 

 being incubated by two hens, both of which were flushed 

 within a couple of yards of the exhibitor's feet. 



Mr. Baker referred to some notes he made nearly thirty 

 years ago in the ' Journal of the Bombay Natural History 

 Society/ in which he commented on the curious fact that 

 both sexes of Caprimulgus albonotatus would accept the 

 attentions of more than one of the opposite sex, and 

 suggested that possibly Mr. Borrer's Nightjars' eggs were 

 the result of two females paired to one male. 



Mr. P. F. BuNYARD exhibited a remarkable series of eggs 

 of the Nightjar, including a first and second laying from the 

 same bird, to prove his identification in regard to the clutch 

 of four exhibited by Mr. Clifi'ord Borrer. Mr. Bunyard 

 said that after very carefully comparing them with his 

 series, he had not the slightest hesitation in saying that 

 they were from the same bird. Numbering the eggs 1, 3, 

 3, and 4, numbers 1, 2, and 3 were of exactly the same type. 

 Number 3 was perceptibly difi'erent in shape from numbers 

 1 and 2 ; the ground-colour, however, was identical, as was 

 also the colour of the surface and underlying pigment. 

 Number 4 was somewhat smaller, and probably the last 

 egg laid, as the pigment was also less dense and there was 

 less gloss. As regards the state of incubation, though the 

 eggs arrived partly blown, there was sufficient evidence left 

 to enable Mr. Bunyard to form the opinion that the four 

 eggs were in two stages of incubation, numbers 1 and 2 

 being four or five days in advance of the others. 



In the series exhibited by Mr. Bunyard all forms were 

 well represented and the collection contained many unique 

 varieties, some of which had already been described in 

 ' The Ibis ' and ' Bulletin.' The rare greenish-ground form, 

 the one to which Mr. Borrer's clutch belonged, was described 

 by him in the 'Bulletin,' No. cxlv. p. 24. The fact of 



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