Hi all,
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All that is gold does not glitter, not all those who wander are lost; the old that is strong does not wither, deep roots are not reached by the frost.
Cheers, birds, and amateur data analysis,--I did a very simple regression of number of participants vs. year. As you can imagine, participation goes up over time. But it's the rate that's the fun part: The Colorado Springs CBC adds almost exactly 1 person every year!--Diana's suggestion that the 2016 count may have been low due to poor weather and thus participation doesn't seem to be reflected in the data; the effort for 2016 was much higher than in 1953 (for example), when only half the number of people recorded the highest count in the Colorado Springs dataset, 1476 birds! There were many years with less effort and more birds, which leads me to believe the low count in 2016 might very well reflect a real population thing going on.Hi again,After beginning some attempts at correcting for effort (thanks for pointing that out, Joe Roller!), I'm still playing with different ways to quantify things. I can share two possible points of interest:Doug, Laramie, WY
--www.carlinglab.comDoug EddyPhD student, Carling LabProgram in Ecology (PiE)
Department of Zoology & Physiology
University of Wyoming
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