Finally closing out my reports for the Wood Duck and Hooded Merganser nesting season:
It’s not yet Labor Day, so I’m calling this report on time. Here’s our season totals.
Our Wood Ducks started one more clutch than 2024 (11 vs. 10), but lost 5 of them (3 to predation, 2 to abandonment). 111 eggs laid, 61 hatched, 55% estimated fledging success.
Our Hooded Mergansers started two more clutches than last year (4 vs. 2); 1 was lost to abandonment. 51 eggs laid, 33 hatched, 65% estimated fledging success.
It’s a typical pattern year-to-year that the HOMEs start fewer clutches but achieve about 10 points better fledging success.
Of the 16 boxes, 12 were used. We had double clutches in 3 of the boxes, with 5 of the 6 clutches successful — including one clutch that did not hatch until an estimated 8 July.
As I noted above, we lost 3 clutches to predation, presumably to Black Rat Snakes in all 3 cases. Plus, we found snakes in two other boxes; these may have consumed eggs that we didn’t have the opportunity to count.