An associational study of Illinois sand prairie . 15 ridge alona: the median line of the carapace. The Havana specieshas not been taken in the woods, and seems to he perfectly at homein the sand-prairie. It has hardly a trace of the dorsal The bird records for the summer of 1910 are in large partthe observations of Llr. F. C. Gates, who has kindly permitted me touse them. Bird life is scanty on the sand-prairie in comparison withthat of the hlack-soil prairie. There is an abundance of insectfood, particularly grasshoppers, and it is thought that severity ofnesting conditions is the chi
An associational study of Illinois sand prairie . 15 ridge alona: the median line of the carapace. The Havana specieshas not been taken in the woods, and seems to he perfectly at homein the sand-prairie. It has hardly a trace of the dorsal The bird records for the summer of 1910 are in large partthe observations of Llr. F. C. Gates, who has kindly permitted me touse them. Bird life is scanty on the sand-prairie in comparison withthat of the hlack-soil prairie. There is an abundance of insectfood, particularly grasshoppers, and it is thought that severity ofnesting conditions is the chief factor in the exclusion of so manybirds from the association. Species which nest in hedges and thicketare quite abundant, but the true prairie species, which nest on theground, are very fev/. The A. 0. U. checklist, from which the nomenclature wastaken, did not cite names of the authors of the various species. t Colinus virginianus yij^ginianus. The quail or bob-white is of secondary importance in bunch-grass. It feeds in the sand-prairie, much of ite food being grass-hoppers while these are abundant. Several flocks were seen inspring. Zenaidura macroura oarolinensis. The mourning dove is of secondary importance in the bunch-grass assoc
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