Researchers hoped to find evidence of a healthy new generation of ospreys when they checked 84 nests of the fish-eating bird in mid-June at Mobjack Bay, an inlet at the southern end of the Chesapeake Bay.
It was the lowest reproductive number in more than 50 years of monitoring the local population of the raptor, according to scientists at the College of William & Mary.
And they said it represented the latest evidence in a long-term decline in breeding success due to the bay-wide depletion of the bird’s favorite food — Atlantic menhaden.
The fish are nutrient-rich, a good source of Omega-3 fatty acids; they consume smaller organisms like plankton and they filter huge quantities of ocean water.
But they are also a mainstay of the commercial fishing industry, caught in mass quantities to be processed into bait for crabs and lobsters, and in greater volume for so-called reduction fisheries, in which they are ground up and turned into products including fish oil and fish meal.
Persons:
College of William & Mary
Organizations:
ospreys, College of William &, Eastern Seaboard
Locations:
Mobjack, Chesapeake