CHAPTER EX 
THE COMMON BIRDS MENTIONED IN THIS WORK 
DIVIDED. INTO, GROUPS, TO..AID: IN. THETR 
RECOGNITION. 
I HAVE now described in the three parts of this 
work (omitting the Addenda occupying pages 
166-205,) fifty-two of the commonest birds, 
with their nests and eggs, found near London, 
and these we have discovered during three 
seasons, with limited time at our disposal. 
I will now group these as an aid to their 
recognition. These lists are not absolute, 
but are intended to indicate how birds may 
be classified in the mind. 
GRouP I.—Common birds, easily recognized, 
and, I would think, known to all who have any 
love for natural Iustory. These would not 
have to be looked for specially, though finding 
their nests would imply some knowledge of 
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