I want to know the answer to the following question:
What is the flight range of landbirds?
All the background I'm provided with is that "Seabirds also undertake long migrations, the longest annual migration being those of sooty shearwaters, which nest in New Zealand and Chile and spend the northern summer feeding in the North Pacific off Japan, Alaska and California, an annual round trip of 64,000 km (39,800 mi).". Is that enough to answer the question?
Answer: no