Encouraging Swifts into Cambridge

Abby Munson The joy of summer to some is signalled by the return of the Common Swift. In groups, swirling above our heads, their calls known as ‘screaming parties’ can often be heard from late spring. High over the rooftops, these masters of the sky can remain unnoticeable, unless you witness their majestic acrobatics and top speeds of up to 69 mph.