Context: The Desert National Park in Jaisalmer is spread over an area of 3,162 square kilometres (1,221 sq mi), is an excellent example of the ecosystem of the Thar Desert and its diverse fauna. Seashells and massive fossilised tree trunks in this park record the geological history of the desert. The region is a haven for migratory and resident birds of the desert. One can see many eagles, harriers, falcons, buzzards, kestrels and vultures. Short-toed eagles (Circaetus gallicus), tawny eagles (Aquila rapax), spotted eagles (Aquila clanga), laggar falcons (Falco jugger) and kestrels are the commonest of these.

Question: Which region contains Desert National Park?
Answer: Jaisalmer

Question: How many square miles is Desert National Park?
Answer: 1,221 sq mi

Question: What types of large fossils are found in Desert National Park?
Answer: massive fossilised tree trunks

Question: What are the most common types of eagles one might see in the Jaisalmer region?
Answer: Short-toed eagles (Circaetus gallicus), tawny eagles (Aquila rapax), spotted eagles (Aquila clanga)

Question: What is another name for a laggar falcon?
Answer: Falco jugger

Question: What type of bird in the region is a harrier?
Answer: Unanswerable

Question: Besides Falco jugger, what is the other name for short-toed eagles?
Answer: Unanswerable

Question: What is the latin name of one of the most common buzzards?
Answer: Unanswerable

Question: What is the scientific name for harrier?
Answer: Unanswerable

Question: What do migratory and resident birds help scientists do?
Answer: Unanswerable