Water-Birds of the Zwaartkojis River. 45 



40. Sterna cantiaca. (Sandwich Tern.) 

 (Layard, p. 702.) 



Occasionally met with in small flocks. 



41. Sterna bergii. (Swift Tern.) 

 (Layard, p. 704.) 



A little more plentiful than the Caspian Tern. 



42. Sterna saundersi (Hume\ (Saunders' Little Tern.) 

 (Saunders, Cat. B. M. xxv. p. 120, 1896.) (Cf. Sterna 



minuta : Little Tern. Layard, p. 705.) 

 A single specimen was picked up dead near the mouth of 

 the river. 



43. Larus dominicanus. (Southern Black-backed Gull.) 

 (Layard, p. 697.) 



The common Sea-Gull of Algoa Bay. It is abundant on 

 the sand-banks of the river. 



44. Hagedashia hagedash. (Hadadah Ibis.) 

 (Layard, p. 739.) 



Sometimes common in the neighbourhood of the river. 



45. Herodias intermedia. (Short-billed White Egret.) 

 (Layard, p. 714.) 



Hather a scarce summer bird ; it, however, visits the river 

 every year. 



46. Herodias garzetta. (Little Egret.) 

 (Layard, p. 716.) 



A regular visitor in small numbers. I have never seen 

 any in full breeding-plumage. 



47. BuBULCUS ibis. (BuflF-backed Egret.) 

 (Layard, p. 717.) 



Rare on the river ; they are more often found on the veld. 



48. Ardea cinerea. (Common Heron.) 

 (Layard, j). 708.) 



Not very conmion ; they spread themselves all over the 

 country. A single bird is usually seen. 



