influence of investigator disturbance on aggressive behaviour and breeding success of ring-billed gulls (Larus delawarensis)
By: by Kevin M. Brown.--
Publisher: Dept. of Biological Sciences, Brock University
Published: 1992
Place of publication: St. Catharines, [Ont.]
Number of pages: 107
Subjects: Ring-billed gull -- Ontario -- Port Colborne.; Sea birds -- Ontario -- Port Colborne.; Gulls -- Ontario -- Port Colborne.