Many people think that animals & birds just make noises & have no real language.
As a pet owner & hunter for many years my experience has shown me that they do have language & certain parts of each species language is understood by all other species. Alarm calls are one instance.
Many, many times my presence has been betrayed to the whole countryside by a high flying crow. He staggers his wing beat & gives a lazy but very penetrating long drawn out call at which all the grazing cattle look up from feeding. Not only do they look up, but in my direction. That attitude then alerts every other creature to the direction of the threat. I have not been scented.
If I stay concealed & do not move until the cattle settle & start grazing once again I can get away with it.
Other times depending on what the crow has told them the cattle will come together & move off right out of it. Now the whole field is empty.
The butcher bird is a mimic & very vocal. They use the call to food of other birds to lure that species in for a kill. They also have calls that alarm for different things that they see. I have lived with & observed & hunted around these birds for a long enough time to understand the different calls. They know this too & will come to the house calling over the same thing again & again & I know that it is a cat that is bothering them because I have experienced the call to cat so many times. I grab a gun, get the cat & they are happy. Next time a cat is bothering them they come & tell me.
The call for a goshawk is different & more intense & the snake warning is different again.
In the field a hunters chances are better by understanding the messaging going on all around them.
Sometimes the message is to go home , leave the area because your cover is completely blown.
Do you listen to the chatter & understand it.
O.M