Per ABA's listing rules: "For a first encounter with a species, no matter
which list is involved, identification may be by sight or sound. The
sighting or sounding may be brief, but in combination, field marks seen or
heard must be sufficiently distinctive to distinguish the bird from all
other species. Recorders must also assure themselves that tape recordings
are not being mistaken for birds. In any situation for any list, a species
may not be counted if the attempts to see or hear the bird are in violation
of the ethical provisions of Rule 5."

Tom Marko
Olney, MD
Montgomery Bird Club (MOS)
Email: 
--------------------------------

> Hi,
>
> ....What is the general feeling among birders about including in their
life lists birds one has
> heard but not seen?  Thanks!
>
> Barry D. Marsh
> Baltimore, MD

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