Cattle Laws Philadelphia Science 
10,000 Birds
NOVEMBER 3, 2018
It is also a month when the Law of Diminishing Returns over-took itself. Cattle Tyrant – Machetornis rixosa. Philadelphia Vireo – Vireo philadelphicus. Mourning Warbler – Geothlypis philadelphia. Mark Hatfield Marine Science Center and Estuary Trail. Las Vegas – Sunset Park. 04 Apr 2018.
10,000 Birds
FEBRUARY 3, 2018
A line plotted against the law of diminishing returns describes an increasingly downward curve and a lister’s life is destined to follow that decline. Mark Hatfield Marine Science Center and Estuary Trail. Mark Hatfield Marine Science Center and Estuary Trail. Mark Hatfield Marine Science Center and Estuary Trail.
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