The last time San Diego had an invasion of robins close to this magnitude was in 1972. Go back another 10 years before that to find one even bigger. The former invasions that occurred every 2 to 5 years began
The last time San Diego had an invasion of robins close to this magnitude was in 1972. Go back another 10 years before that to find one even bigger. The former invasions that occurred every 2 to 5 years began