Western snowy plovers, federally threatened shorebirds that stand just six inches tall, likely struggled in the winter’s heavy storms. Biologists in the Point Reyes National Seashore are seeing fewer nests than expected on the dunes of the bird’s breeding beaches. 

As of last week, just 18 plover nests have been found in the park since breeding season began in March, two on Limantour Beach and the remaining on Great Beach between the South Beach parking…