Columbia subject headings:
Birds--Eggs.
Birds--Nests.
Birds--Ohio.
Harvard subject headings:
Birds--Eggs--Ohio--Pictorial works.
Birds--Eggs.
Birds--Nest.
Birds--Nests--Ohio--Pictorial works.
Birds--Nests.
Birds--North America--Pictorial works.
Birds--Ohio--Pictorial works.
Birds--Ohio.
Princeton subject headings:
Birds--Eggs.
Birds--Nests.
Birds--Ohio.