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My comment was in the context of the suggestion as
given in the GBS Report as follows (corresponding sentence for each species):
"Young birds are difficult to distinguish from young
Shining / Horsfield's Bronze-Cuckoos. So there may be some interchangeability of
late summer and autumn records of the two species, or observations of either
left unrecorded when observers could not be confident of identification." I have
not heard of anyone disagreeing with this comment.
I certainly have seen some and not known which
species they were (although not in a GBS context) and would not have felt it
appropriate to record it as anything beyond a dy Bronze-Cuckoo of some sort. I
assume I am not alone in having that experience. In the field, there is little
additional clues to go by as (unlike most young birds, young cuckoos are not
likely to be attended to by their real parents). Looking at the pictures
in HANZAB though suggests they are not so similar as suggested by eg Pizzey's
& Simpson's FG.
Maybe something for a BOM at a COG
meeting...............
Philip
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