• Ha, great question! 🙂

      When the Mission underwent its Grand Restoration project, they had to remove several swallows’ nests, which ultimately led to some shifts in migration/nesting patterns. So while it’s still true that the swallows arrive in March and leave in October, the actual arrival and departure dates — which are celebrated locally, with much fanfare and pageantry — are more legendary than actual.

      You can read more about the Mission Swallows here:

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