Death is always a heavy word, and this is true for birds as well. In life, people often see groups of birds gathered around the body of a deceased companion, seemingly holding a "funeral" for their departed friend. In reality, these behaviors are not totally the same as human grief over death. They may involve more considerations related to population survival.

In studies of corvid birds, researchers often observe this scene: when a bird discovers the body of a fellow bird, it emits a particularly loud alarm call, attracting nearby companions to gather. These birds will linger around the deceased companion for a period of time, constantly calling out. This collective, jarring "clamor" can last from a few seconds to half an hour, during which time the flock often stops feeding.

Besides gathering and calling, some reports even describe more "unusual" behaviors. The animal behaviorist Marc Bekoff observed four magpies standing for a long time beside the body of a deceased companion. Two of the magpies flew away, each returning with a few blades of grass and twigs, and carefully placing them beside the body. It's like offering a "wreath" to the deceased. Afterward, the magpies quietly waited for a while before flying away one by one. These phenomena suggest that birds seem to have a special behavioral pattern in response to the death of their companions.

Faced with such complex and subtle behaviors in birds, scientists have designed ingenious experiments to study them. The most famous simulated experiment is the systematic study of wild American crows conducted by a research team at the University of Washington. 

Danger Signals and Social Learning:

Based on the above research, scientists generally believe that birds gathering around dead conspecifics is not due to "mourning", but rather viewing death as a danger signal. In other words, a dead conspecific means that there may be a threat nearby. Therefore, they gather together and call loudly to warn their companions and jointly confirm whether there is indeed a danger lurking.

Evolutionary and Cognitive Basis:

This death-gathering behavior exhibited by corvids in particular is considered to be related to their high intelligence and sociality. Corvids generally have larger brains and complex neural structures, giving them excellent learning and memory abilities and social cognitive abilities. This cognitive ability is an important foundation supporting the "funeral" behavior. It is because of this "intelligence" that they can use information about the death of their conspecifics to conduct complex risk analysis.

The study of avian "funeral" behavior reveals an astonishing aspect of the animal world. Those highly intelligent birds are able to glean information from death events to increase their vigilance and pass this experience on to their companions. This behavior demonstrates the survival wisdom and also allows us to see a certain kind of "concern" for death in species other than humans. While we cannot simply equate it to human-like mourning, the act of reacting to death itself is a profound adaptation of life to its environment.