Of the four survey areas initiated in 1899, three were published the next year.

They discovered 42 new supernovas in their survey area, including six of the seven most distant known.

Ultimately, the geologists create a three-dimensional model of the survey area that they interpret based on past experience.

Over all, the fall migration flight from the standard survey area is expected to total 71 million, 20 percent more than in 1993.

Their next survey area would definitely be at a lower altitude.

The total breeding population count in all survey areas was 31.3 million birds, up 1 percent from last year.

Later, farmers moved into the survey area and homesteaded on small tracts of land.

One reason is that some families that have suffered violent deaths leave the survey area.

The North American recovery plan's goal for the survey area is 36 million.

He said there are earthquakes that occur once or twice a year in their survey area.