https://scholarworks.sjsu.edu/faculty_rsca/6646/
"The First GPS Observation of a Western Gull (Larus occidentalis) Ridin" by Megan A. Cimino,...
Gulls have a flexible diet allowing them to forage both at-sea and on land with prior research showing Western Gulls (Larus occidentalis) forage more on land...
the firstof awestern gulllarus occidentalisgps
https://fieldguide.mt.gov/AnnualChart_FS.aspx?elcode=ABNNM03180
Western Gull - Obs. by Year - MONTANA FIELD GUIDE™
MONTANA FIELD GUIDE™ contains a wealth of information about Montana's diverse species.
western gullby yearobsmontanafield