I learned something new today and that is that a flock of starlings are referred to as a murmuration….who knew!! I can see that though, by the sounds they continually make.
On another thought; the bible tells us that we should not grumble (murmur) as it could be the difference between life and death.
And do not grumble, as some of them did—and were killed by the destroying angel. 1 Corinthians 10:10
The above verse is in regard to the Israelites showing their discontent with God after all He had done, and was doing for them.