During migration times the bird count in the bay may exceed 100,000.
Participants will learn about the bird count planned on Dec. 15 with a walk and observation of birds at the center's feeding station.
Local bird counts indicate that there are at least 163 species of birds in the county.
Andy would tot up the bird count (90 species, in the end, but no Ross's gull).
More than 1,700 bird counts were tabulated last year involving 45,835 people throughout the western hemisphere.
Birders can also take part in bird counts.
"I went on my first bird count with the Audubon Society of Illinois," he said.
I am a birder who took part in a bird count last winter.
The model is the one used by the Audubon Society for bird counts.
In addition to the large bird count, a further 310 species of migratory birds swell bird numbers each year.