Savannah Sparrow (Passerculus sandwichensis) Science Article 7
Van Koersveld (Proc. 10th Intern. Ornith. Congr.: 592-594,1 951) demonstrated that digestion in Corvidae continues for 20 to 30 minutes after death unless stopped in somemanner. He also demonstrated that soft-bodied forms such as earthworms were completely digested within that time and wireworm larvae were nearly gone in the same time. Harder forms were less completely digested in that time.
Dean G. Dillery, Auk, Vol. 82