The Swedish term "snattra, kackla, pladdra" matches the English term "gaggle"

other swedish words that include "kackla" : english :
kackel, kackla, fnitter, kackla, prat cackle
other swedish words that include "pladdra" : english :
rabbla, pladdra, sorl, jollra babble
pladdrar babbles
pladdra, pladder, rotvälska jabber