Date: 9/24/18 10:55 am
From: Peter H Yaukey <PYaukey...>
Subject: Re: [LABIRD-L] moonwatching
I saw three in four minutes last night, though none appeared passerines. Two going roughly south looked heron-ish, and one going roughly east looked like waterbird sp.


Peter Yaukey

________________________________
From: Bulletin Board for Dissemination of Information on Louisiana Birds <LABIRD-L...> on behalf of dan purrington <oceanites1...>
Sent: Sunday, September 23, 2018 8:19:46 PM
To: <LABIRD-L...>
Subject: [LABIRD-L] moonwatching

The next few days represent an ideal time to monitor migration by counting
birds crossing in front of the moon. The same will be true a (lunar) month
from now. Unfortunately we need a wind shift in order to get things
going. Patience is required, however, a single bird per minute is evidence
of a big movement, so you might see one in 10 minutes as things are
tonight. Counts can be converted to some quantitative measure of migration
such as birds per mile of front per hour, and can actually be compared to
radar reflectivity in dBz.

Dan Purrington

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