Ecologists have been studying how groups of animals deal with famines, natural disasters, loss of habitat, climate change, etc for many years. These conditions change supply and demand on resources that are out of those animal populations control. Studying cooperation in bacteria colonies from a similar lens was pretty hot in academia in the late 2010s from what I remember.

Each animal defines value differently (heck, different groups of different people define value differently). A half-eaten sandwich thrown on the street is trash to you, but a jackpot for your local crow. The crow has no interest in the housing market though.