Frozen stocks of chicken wings in the United States has continued an upward climb, with August 31 levels increasing 13 percent from the previous month and 83 percent from August 31, 2012. This is the second month in a row frozen wing supplies have jumped 13 percent on a month-over-month basis, according to the USDA's Cold Storage report, released on September 23.

Many analysts had been speculating that wing supplies were building in anticipation of McDonald's nationwide launch of Mighty Wings. The quick service restaurant giant introduced the wing product on September 9.

U.S. wings in cold storage on August 31 were at 102.8 million pounds, up 13 percent from the 94 million pounds recorded at the end of July. The August tally was 83 percent higher than the August 2012 totals of 56 million pounds.