No. in 
A.J 
Data Campbell's No. of 
No. 
302 
304 
395 
306 
Sou 
Book. 
638 
720 
723 
Eggs. 
I 
THE JACKSONIAN OOLOGICAL COLLECTION. 
WHITE-WINGED TERN, 
Hydrochelidon leucoptera, M. and S. 
One egg, taken in New Zealand in November, 1889. Unfortunately I have no further data 
respecting this rare egg ; it seems a pity that many collectors are so careless with their data. I have 
frequently had to write and ask for particulars of certain eggs which I have received in exchanges. 
GANNBET, 
Sula serrator, G, R. Gray. 
Clutch of one egg, taken on Cat Island, Bass Straits, by F. H. Morton, on the 12th of November, 
1891. The natural line is so thick on this egg that a person would really think it had been applied 
artificially. The eggs of nearly all birds of aquatic habits are found to be lime-coated, because the 
substance generates warmth when the wet breast of the hen comes in contact. The eggs of the follow- 
ing are more or less lime coated :—Pelicans, Ibis, Spoonbills, Penguins, Grebes, Cormorants or Shags, 
Gannets, Snake-necked Darters, Swamp Coucal, etc. 
LARGE BLACK CORMORANT, 
Phatlacrocorax carbo, Linnzus. 
Splendid clutch of 3 eggs, taken by Sid. W. Jackson near Nymboida, Clarence River district, 
N.S.W., on the 20th of September, 1897. The nest was built on the horizontal limb of a small Swamp 
Oak ( Casuarina glauca) leaning over a freshwater creek at the foot of the mountain range. The eggs 
had incubation about six days old, but I succeeded in blowing them neatly. An average specimen of 
the set measures = 2°40 X 1°54. 
LARGE PIED CORMORANT, 
Phalacrocorax hypoleucus, Brandt. 
Set of 3 eggs, taken by J. W. Mellor at the Coorong, South Australia, on the rst of October, 1894. 
One egg of the set measures = 2°34 x 1°57. 
WHITE-BREASTED CORMORANT, 
Phatlacrocorax gouldt, Salvadori. 
Set of 3 eggs, taken by Sid. W. Jackson at Iluka, at the mouth of the Clarence River (North 
Head) N.S.W., on the gth of November, 1894. Nest was composed of grass and twigs, and placed on 
top of a tall stump, not far in from the main beach. An average specimen of this set measures = 
2°47 x 1°45; 
LITTLE BLACK CORMORANT, 
Phalacrocorax sulcirostris, Brandt. 
Clutch of 4, taken from a nest built in a Red Eucalypt (Zucalyptns rostrata) at Harrington Creek, 
Lavadia, Clarence River, N.S.W., by L. Vesper, G. Cutney, Frank and Sid. W. Jackson, on the rrth 
of September, 1898. The trees were full of nests; I never found such a big colony of birds breeding 
before ; when we climbed the trees we saw eggs everywhere we looked. The nests were all constructed 
of sticks and green twigs, and placed in Swamp Oak, Mahogany, and Eucalyptus trees at altitudes 
varying from 20 to 45 feet. ‘The nests measured 18 inches across, and were in a filthy condition, and 
one had to be very careful climbing the trees, especially the smooth-barked gums or Eucalypts, as the 
limbs were so slippery, and we had to do a bit of greasy pole work without a doubt. The Little Black 
and White Cormorant also had its nests mixed with those of this species, likewise the Snake-necked 
Darter. The uproar and stench from all these birds, when we climbed the trees, was just terrible. We 
had egg blowing to do that day properly, and the back of my ears suffered very much from it afterwards, 
as that afternoon we blew nearly rooo eggs altogether, including the three species. I shall not forget 
the incident, as it was the first and only time we had ever found these Cormorants breeding, and it is 
very probable that we may never come across such a colony of them again. An average specimen of 
this set measures = 1°96 x 1°32. 
52 
