1 919-1 Cape San Antonio, Buenos Ayres. 501 



chance that I became aware of the existence o£ the birds 

 and their nest. 



The clutch may vary from four to ten or eleven, to which 

 may be added those dropped on the ground below the nest 

 (therel)y often betraying the nest). I have taken eggs from 

 the 21st of October to the 18tli of March ; the latter would 

 evidently represent a second brood. Their average measure- 

 ment is 41 X 31 mm. 



270. Piaya cayana Linn. Chestnut Cuckoo. 



The one and only 'recorded occurrence of this handsome 

 Cuckoo was in January 1913, when Mr. M. A. Runnacles 

 shot a specimen in the garden of " Linconia^'^ about 

 six miles north-east of the Yngleses head-station. Besides 

 kindly keeping the skin for me, he was able to add the 

 information that the solitary individual was being mobbed 

 by other birds (an experience to which our local Cuckoo, 

 previously alluded to, is never subjected). 



The specimen is now in the British Museum, and 

 Mr. Charles Chubb comments upon the interesting incident 

 as follows: — ""This individual specimen is of the Para- 

 guayan or southern Brazil variety (P. macrurci), and is 

 of special interest in connection with its range. In all 

 probability it had crossed the estuary of the River Plate 

 from the neigiibouring Republic of Uruguay, instead of 

 being a wanderer from Paraguay, which latter course would 

 have involved following the very sparsely- wooded littoral of 

 the Province of Buenos Ayres.'' 



276. Conurus patagonus Vieill. Patagoniaii Parrot. 



In 1879 I alluded to the " Barranquero '* or Barraiica- 

 bird as being common, though not a resident, passing 

 over the Yugleses in the morning from the south-west 

 on the way to its feeding-grounds in the rincones, and 

 returniug in the evening, during all but the four summer 

 months ; to this 1 added further details and notes. In 

 course of subsequent years I was enabled to corroborate 

 the above period, with little or no variation. But, since 



