234 GREBE. 



each bird fells for about fourteen {hillings*. It is alfo mentioned 

 as a common bird in the lakes of Sibirta ; but not feen in RuJJia j\. 

 It is with fome reluctance that we pen our doubts concerning 

 the identity of this as a fpecies, at leaft as being diftinct from the 

 great crejted Grebe, in contradiction to what former authors 

 have recorded on the fubject. It is certain that the laft-named bird 

 varies exceedingly at different periods of life, from what has been 

 faid above j and we are likewife as certain that the birds which, 

 have been pointed out to us as the Geneva Grebes, have been no 

 other than young ones of the great crejted, not having yet at- 

 tained the creft ; and whoever will compare Brijo-ns three fi- 

 gures of the birds in queftion J, will find (the creft excepted) that 

 they all exactly coincide, allowing for their different periods of 

 age. We have been further led into this opinion from the cir- 

 cumftance of a large flock of them, which appeared in various 

 parts of the fhores of the Thames, from Grave/end to Greenwich, 

 laft winter, many of which were killed and came under our in- 

 flection : among them we found the greateft variety about the 

 head, from being perfectly without a creft, to the moft complete 

 one* with all the intermediate ftages above mentioned. 



3- Le grand Grebe, Buf. Oif. viii. p. 242. 



Grebe de Cayenne, PI. Enl. 404. fig. 1. 



CAYENNE GR. 



Description. r T* H I S is nineteen inches and a half in length. The bill is 



dufky j the under mandible yellow at the bafe : head, and 



upper parts of the neck and body, dufky brown : fore parts, as far 



* Br. Zocl. f Mr. Pennant. 



X Brif. vol. vi. pi. 3. fig. it pi. 4. and pi. 5. fig. 1. 



6 as 



