A couple of day’s back we presented the county heat maps by year for the years 2010 through 2012.
Today we’ll put the specie count numbers to those maps. These three maps are below.
There are quite a few dynamics at play in determining the number of specie recorded each year. Here a few off the top of my head:
Physical upper limit of specie present in any given year
Effort put into finding them (more on this in a later post)
Population size within a county – related to above
Percentage of eBird recorders within the population
Ability of a county to draw eBird recorders (like Harney)
Unequal distribution of avian wild life