Comparing migration map to those of previous years

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Posts: 28
Joined: Sun Mar 23, 2014 9:54 am
Location: TX/Katy

Looking at the density of dots on the 1st arrival maps of previous full years I would venture that maybe only 1/3 to 1/2 of the PM 1st arrivals have yet been reported this year.

Is that because people aren't reporting or that, on average, the migration is late this year? If the latter is the case then there are a bunch of PM's still crossing the Rio Grande river. Not many sub-adults showing up yet.

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