119 
Jala BORN ICLA RUFICOMMSy i soe 4. igiigt wot « oMole VePk VR 
Rep-BREAstap Goose. 
An inhabitant of northern Russia and Siberia, and a chance visi- 
tant to Britain, 
Pee OUURNICUN BRENTA,  %) SN Ot! OG Volo Ve Plo VLE, 
Brent Gooss. 
Plentiful in winter on the muddy flats at the mouths of rivers 
from the Thames to the Tamar; equally numerous in a northerly 
direction, including Ireland. 
Subfamily CYGNINAL. 
* Of this subfamily there are nine or ten species—three or four of 
which pertain to the fauna of Great Britain, two or three to that of 
North America, the celebrated Black-necked Swan of Chili, and the 
Black Swan of Australia. 
BLO OVGNUGOLGR 4) ws 9s. 0c * . +. 4 92 eter VOle Veable VED 
Mors Swan. 
Supposed to be still living in a wild state in Eastern Kurope ; 
strictly stationary in Britain. 
So PMGUGNUG MERUSUTGE sehod el forte, 4) et ue, beds VOle Vesemenes 
Wirp Swan, or Wuoorer. 
A winter visitant, arriving in autumn and departing in spring, to 
breed in Ireland and many parts of the arctic circle. 
pe RO VGNAIS MUNOR I As) 'e, ai- y 0g cs) 25. oy cay tae, VO Ve beers 
Brwicr’s Swan. 
This is also a winter visitor, arriving in autumn and retiring 
northwards in spring. 
326. CreéNus IMMUTABILIS, 
Polish Swan. 
Ornithologists are at variance as to the propriety of considering 
this bird a distinct species from C. olor, the ditterence between 
them being but trifling. The Polish Swan is a somewhat larger 
bird, with a smaller frontal knob, while the naked space between 
the bill and the eye is larger; and the feet are grey instead of olive- 
black. Mr. Bartlett has weighed several Polish Swans living at the 
Zoological Gardens, which turned the scale of twenty-seven pounds; 
and he assures me they would be two pounds heavier after moulting. 
He considers there are tangible differences between the two birds ; 
and I must confess I do also since I have been able to make some 
