"We're still waiting to see the first monarch. Everybody I ask says the same thing, including the guides at El Rosario Sanctuary."

Silence from the Migration Trail
For a second week, the final 300-mile stretch of our map is empty. Is the migration stalled or are there no observers reporting from this region?

"There were no reports all week from the states of San Luis Potosi, Queretaro, or Guanajuato," says Rocio Trevino, Director of Correo Real.

Our southernmost report is still the roost in Tamaulipas:

"I've been watching the 5,000 or more monarchs feeding in a large field of girosoles and sleeping in a nearby walnut tree," notes Biologist Alfonso Banda Valdez, state Director of Natural Resources.