Our field crews left before the fate of this fourth attempt could be determined.

If they fail to do this, the field crew will camp out nearby even in freezing weather to protect the bird through the night.

One final danger - hunters - is beyond the control of the field crew.

Over the last 12 years, field crews have inventoried 112 sites across Madagascar.

Many archeologists on field crews have lots of experience and excavate as their job.

Now he was hours ahead of the field crew, who were racing along behind him, from position to position.

"You might have noticed how many new faces there are among the field crews these days," he said.

Bobby Jones charts out the 2,800 plantings each year and works with the field crews.

This data will be evaluated and summarized as it is received from the field crews.