386 Mr. E, Gibson on the Ornithology of [Ibis, 



with one of Moluthnis bonariensis. 1st November, 1881/' 

 The eggs are as described by Hudson : — " Of a pale bluish 

 ground-colour, irregularly marked with black and very dark 

 brown spotSj and iu some instances clouded with faint grey/' 

 I regret I have no specimens for measurements. 



77. Zonotrichia pileata (Bodd.). Chiugolo Song-Sparrow. 



I have nothing of importance to add to ni\ former notes. 

 In the three last months of 1913 it was extraordinarily in 

 evidence, owing to the great flood having driven it out of 

 all the lower grounds. In the garden, consequently, the 

 havoc it caused was of the very worst nature. 



It will be of interest to watch the effects produced by the 

 advent of its European congener. Passer domesticus Linn, 

 (now^ unhappily, established in our midst). 



Passer domesticus Linn. Domestic Sparrow. 



On revisiting the Yngleses in the summer of 1916-17, 

 I found this undesirable alien firmly established at the 

 head-station. In all the holes under the eaves of the 

 buildings, and even in the boxes put up for the benefit 

 of the Domestic Martin {Frogne chalybeci), were its nests 

 to be found, whilst a considerable number roosted at night 

 under the same eaves. None but a bird of this audacious 

 species would systematically cling outside the cage of an 

 innocent little Parroquct, suspended over the kitchen door, 

 and shamelessly pilfer its sopped bread ! Antonio, the 

 gardener, was promptly despatched, with a flea in his ear 

 and a wire hook in his hand, to drag out all the nests, and 

 I was sadly ungrateful when he appeared at the ofliice-door 

 with a double handful of the familiar eggs and the solicitous 

 query, " Did I want them for my collection ? " It is much 

 to be feared that all such eftbrts will be in \ain, for I have 

 it on recortl that Mr. Grant took a nest situated in an old 

 nest of the Firewood-gatherer {Anumbius acuticaudatus). 

 And in any case, a bird of such versatility and resource 

 must necessarily baffle all ordinary means of repression. 



The species was introduced into the Argentine somewhere 



