ROCK-WARBLER. 
does not assume the shape of a nest until a few days before it is completed, 
when a hole for entrance is made, and the inside is warmly lined with feathers ; 
but when finished, it is a very ragged structure, and easily shaken to pieces. 
The birds take a long time in building their nests ; one found on the 6th of 
August was not finished until the 25th of that month ; on the 30th, three eggs 
were taken from it. This nest was suspended from the roof of a small cave in 
the gully of George’s River, near Macquarie Fields, and was composed of 
rootlets and spiders’ webs, warmly lined with feathers and opossum-fur ; it 
contained three eggs of a pure and glossy white, each of which was lines in 
length by 6| in breadth. The breeding-season lasts from August to December, 
during which two broods are reared. I have never found more than one nest 
or one pair of birds near the same part of the gully ; and I do not think they 
will make their nests near each other, much less under the same rock.” 
Mr. Edwin Ashby has written me : “I observed this bird at Woodford 
in the Blue Mountains, New South Wales, in June, 1915, where it was flitting 
about the rocks and low clefts in the sides of most of the gullies ; the birds ran 
very swiftly over the rocks but seemed very retiring. I have also seen it in 
similar situations in the rocky gullies running down to Middle Harbour, Sydney, 
but although I kept a look out for it in suitable situations near Buli, south of 
Sydney, I did not see it there.” 
Mr. J. W. Mellor’s notes read : “I have seen this little bird fairly plentiful 
in the National Reserve near Sydney, where it lives in the rocky country, and 
where caves are formed by the wearing away of the softer parts of the stone 
it builds its nest. A pair of young could hardly be detected from their parents 
at a distance but upon examination they had a less brilliant coloration of rusty 
brown.” 
This lovely little bird was figured by Lewin who named it Sylvia solilaria , 
and in 1837 Gould proposed a new generic name for it and it has been allowed 
generic distinction ever since. When the Lambert drawings were examined by 
G. R. Gray, Gould and Strickland, they determined a drawing as representing 
this species and thereupon displaced Lewin’s name by one proposed by Latham, 
viz. Sylvia rubricata, and upon Gould’s acceptance this name was continually 
used, the bird becoming well known under the name of Origma rubricata. A 
few years ago when the Watling paintings were acquired by the British Museum 
the painting upon which Latham had written the name Ruddy- War bier was 
recognised by Sharpe as that of a Cuckoo. However, through inadvertence, 
Sharpe did not make any alteration so that it was left for myself. I then 
utilised rubricata for the Cuckoo, and revived solitaria for the Rock- War bier, 
and I have used this ever since. Just recently the Check List Committee of the 
Royal Australasian Ornithologists Union drew my attention to the fact that 
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