Gulls and terns nesting in northern Lake Ontario and the upper St. Lawrence River
Blokpoel, H. 1977. Gulls and terns nesting in northern Lake Ontario and the upper St. Lawrence River. Canadian Wildlife Service Progress Notes 75: 1-12.
Monofilament lines exclude Ring-billed Gulls from traditional nesting areas
W. B.Jackson and B.Jackson Dodd, Eds.. Bowling Green State University, Bowling Green, Ohio
Blokpoel, H. and G. D. Tessier. 1983. Monofilament lines exclude Ring-billed Gulls from traditional nesting areas. Pages 15-20 in Proceedings of the Ninth Bird Control Seminar (W. B.Jackson and B.Jackson Dodd, Eds.). Bowling Green State University, Bowling Green, Ohio.
Distribution and abundance of colonial waterbirds nesting in the Canadian portions of the lower Great Lakes system in 1990
Blokpoel, H. and G. D. Tessier. 1991. Distribution and abundance of colonial waterbirds nesting in the Canadian portions of the lower Great Lakes system in 1990. Canadian Wildlife Service Technical Report Series 117: 1-16.
Distribution and numbers of Common Terns on the lower Great Lakes during 1900-1980: A review
Courtney, P. A. and H. Blokpoel. 1983. Distribution and numbers of Common Terns on the lower Great Lakes during 1900-1980: a review. Colonial Waterbirds 6: 107-120.
Nesting rafts as a management tool for a declining Common Tern (Sterna hirundo) colony
Dunlop, C. L., H. Blokpoel and S. Jarvie. 1991. Nesting rafts as a management tool for a declining Common Tern (Sterna hirundo) colony. Colonial Waterbirds 14: 116-120.
Common Terns nesting on navigational aids and natural islands in the St. Lawrence River, New York
Karwowski, K., J. E. Gates and L. H. Harper. 1995. Common Terns nesting on navigational aids and natural islands in the St. Lawrence River, New York. Wilson Bulletin 107:423-436.
Management efforts for the conservation of Common Tern Sterna hirundo colonies in the Great Lakes: Two case histories
Morris, R. D, H. Blokpoel and G. D. Tessier. 1992. Management efforts for the conservation of Common Tern Sterna hirundo colonies in the Great Lakes: Two case histories. Biological Conservation 60: 7-14.