46 Mr. J. G. Brown 07i the 



49. Herodias alba. (Great White Heron.) 

 (Layard, ]). 714.) 



This bird is reported to occur on the river, although I have 

 not seen it. 



50. Ardea purpurea. (Purple Heron.) 

 (Layard, p. 710.) 



A regular summer visitor, but rather scarce ; very seldom 

 found in breeding-plumage. 



51. Nycticorax griseus. (Night Heron.) 

 (Layard, p. 724.) 



Scarce ; found on the freshwater part of the river. They 

 conceal themselves perched on trees. 



52. BoTAURUS PUSiLLUS. (African Little Bittern.) 

 (Layard, p. 720.) 



Found in fair numbers in the weedy portions of the river, 

 although they do not keep so much to the reeds and bushes 

 as the larger Bittern does. 



53. BoTAURUS CAPENSis (Ayres). (African Bittern.) 

 (Ogilvie-Grant, Oat. B. M. xxvi. p. 257, 1808.) (Cf. 



Botaiirufi stellaris : Common Bittern. Layard, p. 722.) 

 Found in the reed-beds of the freshwater part of the 

 river. It is very seldom seen. I believe it to be a local 

 resident. 



54. Scopus umbretta. (Hammer-head.) 

 (Layard, p. 725.) 



Common resident. Only seen singly, except during the 

 breeding-season. 



55. Ciconia alba. (White Stork.) 

 (Layard, p. 728.) 



These Storks are only occasionally seen ; generally in large 

 flocks. 



56. CicoNLA NIGRA. (Black Stork.) 

 (Layard, p. 729.) 



A regular summer visitor. It is usually seen in small 

 flocks — sometimes singly. They are becoming scarcer every 

 year. 



