112 
The Queensland Naturalist. 
VoL. I. 
CORRESPONDENCE. 
The Editor, The Queensland Naturalist, 
Sir, — • 
Mr. W. M. Hull asks what bird utters the mournful 
note at night, which he describes.* I certainly should 
judge it to be the Square-tailed or Brush Cuckoo {Caco~ 
mantis flahelliformis). I have frequently heard this bird 
uttering the note described, and at frequent intervals 
throughout the night, dark or otherwise. 
The birds are usually single, and are migratory. The 
Chestnut-Breasted Cuckoo has the same habit in North 
Queensland, and if anything, utters it more frequently 
than its more Southern ally. 
Yours, 
D. LE SOUEF. 
Melbourne Zoological Gardens. 
[Note. —Mr. H. Tryon, to whom this letter has been referred, now 
states that the Brisbane bird alluded to by Mr. Hull is evidently the 
square-tailed Cuckoo, C. varioloms, Horsf. — Er>.] 
To the Editor, The Queensland Naturalist. 
Sir,— 
To Mr. H. Tryon’s interesting paper on the Spine- 
Tailed Swift (Chcetura caudacuta), page 38. No. 2 of your 
Journal, I would like to add a few more details. 
When these birds are migrating, they usually do so 
in company with the White-Rumped Swifts {Micropus 
pacificus), and they also nest in company with these birds, 
as on the clilf at the Kegon Waterfalls, in Japan. T saw the 
larger mud nests of the Spine-Tailed fastened on to the 
rocky side, and the White-Rumped were building in crevises 
and hollows alongside, but out of sight. I described it 
in the October (1907) number of the “ Emu,” page 73. 
They usually leave Tasmania and Victoria in February 
and March on their way north. 
Yours, 
D. LE SOUEF, 
Melbourne Zoological Gardens. 
• Queensland Naturalist, No. 2, p. 40. 
