This issue is on the taxon pages for taxa with a large number of observations in any month, such as
On the Seasonality, History, and Life Stage plots, some of the vertical axis labels end up duplicated (e.g., multiple axis ticks with the same value of 1e+5 or 2e+5 or higher). This is because the number format is inadequate and allows unhelpful rounding. Labels that should be 8e+4, 1.0e+5, 1.2e+5, 1.4e+5 turn into 8e+4, 1e+5, 1e+5, 1e+5, for example.
It'd be better if the scientific notation allowed a decimal place or two, or scientific notation could be avoided in favor of integers.