I want to know the answer to the following question:
What part of birds was found on an expedition to Mt. Everest?
All the background I'm provided with is that "An expedition to Mt. Everest found skeletons of northern pintail Anas acuta and black-tailed godwit Limosa limosa at 5,000 m (16,000 ft) on the Khumbu Glacier.". Is that enough to answer the question?