Field Sparrows (image) University of Illinois at Urbana-Champaign Share Print E-Mail Caption Field sparrows have increased in abundance in Illinois, but the species lacks sufficient habitat to reach state population goals, researchers report. Credit Photo by Michael Jeffords and Sue Post Usage Restrictions Photo may be used only with stories about this research. Credit required: Photo by Michael Jeffords and Sue Post Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.