The U.S. Fish & Wildlife Service has posted the annual American Woodcock Population Status, 2015 report on its website. Links to this and prior year reports as well as other important facts about the bird are provided on the Grouse/Woodcock > Woodcock Facts page of this website.
The entire abstract follows:
Abstract: American Woodcock Singing-ground Survey data for 2015 indicate that the index for singing American woodcock (Scolopax minor) males in both the Eastern and Central Management Regions was not significantly different from 2014. The Eastern Management Region had a significant, declining 10-year (2005-2015) trend of -1.56%/year, which marks the second year in a row there has been a declining 10-year trend. The 10-year trend in the Central Management Region was not significant after showing a decline last year. Both regions have a significant, long-term (1968-15) declining trend (-1.1%/year for the Eastern Management Region and -0.7%/year for the Central Management Region). The 2014 recruitment index for the U.S. portion of the Eastern Region (1.49 immatures per adult female) was 6.9% less than the 2013 index and 8.9% less than the long-term regional index, while the recruitment index for the U.S. portion of the Central Region (1.39 immatures per adult female) was 9.6% less than the 2013 index and was 10.6% less than the long-term regional index. Estimates from the Harvest Information Program indicated that U.S. woodcock hunters in the Eastern Region spent 119,700 days afield and harvested 58,600 woodcock during the 2014-15 season, while in the Central Region, hunters spent 227,600 days afield and harvested 141,500 woodcock.