Another small pheasant warning

Again I was cycling through the fields when the pheasants, and even a lone crow, started crying. It did not last very long and seemed less panicked than the previous time. I saw no obvious effects of an earthquake, but with last week fresh in mind, upon arriving at work I checked the JMA records to find that indeed, another small earthquake had occurred. I am seriously considering pheasants as an early warning system, or to check whether other animals with less obnoxious mating calls can perform the same.