After my annual scuffling with the Google chart API, I can post the summary graph of nesting activity for 2021. There’s a gray vertical bar for 2020’s missing data.
The true Wood Duck numbers (blue track) are higher, because I did not include two boxes of uncertain disposition: one for which we never got a good egg count, and one dump nest of 25 eggs that didn’t show sufficient evidence that 24 of the eggs had hatched. I found one dead duckling and not much else.