Documents • Iowa State University • Avian Archives of Iowa Online

Title	Genres	Topics	Date (Start)	Date (End)	Type	Description	Creator/Author	Birds	Locations	Locality	Habitat	Remarks

Red Rock Lake, Red Rock Refuge, Iowa, spring 1973	Field notes	Bird watching Birds--Nests Birds--Research Environmental monitoring	1973-03-01	1973-05-31	Manuscript, graphic, and printed material	Report from Gladys Black regarding birds sighted at Red Rock Lake and the Red Rock Refuge during the spring of 1973. Much of her report was about nesting failures of Great Blue Herons and investigation into whether this was caused by pesticides. This item was used as supporting documentation for the Iowa Ornithologists’ Union Quarterly field report of spring 1973.	Black, Gladys	Great Blue Heron	Lake Red Rock				Iowa Ornithologists' Union \| MS 166	17	12