While many would like to believe that birds 'mate for life,' turns out that just like humans, stressed-out birds are just as likely to cheat on their partners. And the worse part is that global warming seems to be exacerbating the trend.
According to the Scientific American, researchers recently found out that females in unstable climates lay more eggs that lack their spouse's DNA and swap mates more often between breeding. They also discovered that female birds are more likely to stray if their male spouses aren't able to provide for them.
However, there may be an upside to all this cheating as "Mating with multiple partners improves the chances that at least one chick will have the genes to cope with the variable conditions to come," explained a lead researcher behind the study.