Nesting box service

Went out Feb. 15th to start servicing Wood Duck nesting boxes. We have 150 boxes west of Modesto, Ca. on a couple of ranches. Out of 20 - 25 boxes serviced, we found a clutch of eggs already being laid. The hen had about 6-7 eggs in the clutch. We were very surprised to find that some ducks have already begun nesting because most ducks that we encountered that day have not started to pair off.