Oops! I had the sunset time wrong. That is important, because the peak
time for evening return flights into the Refuge is about 1 hour before
sunset. We had witnessed that same 1-hour-before-sunset peak during
several previous years.
Yesterday's sunset time was 6:09, CDT (not 5:09). The vast majority of
the crane ingress flights were between 5:01 and 5:08 CDT.
Sorry.
---Ron Refsnider
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