This species lives in small flocks of less than 12 individuals. (sciencedaily.com)
Zebra Finches are very social and need to be kept in small flocks of 3 to 4 birds in order to thrive, but this only adds to the joy of being able to watch them interact with each other. (thesprucepets.com)
I put up several small flocked trees from King of Christmas. (nestingwithgrace.com)