What would cause embryos to be positioned upside down- butt in the airspace, shoulders in the pointy end? Have peafowl eggs in Rcom-20. First set had one like the above last week. Now this set has another one exact same way(currently pipped at pointy end and candling shows butt/legs in airspace, exactly same as the previous case). Thing is the peafowl breeders are not related, in fact first set belongs to someone else, this set is from my own birds. Also got a batch of ringneck pheasant eggs. Candling at day 5 showed one embryo that was upside down- head was oriented towards pointy end. That one eventually died, so won't get to see if it would have ended up yet another upside downer. This batch is due to hatch by Monday.. That seems pretty extraordinary to be mere chance.. but what would cause it? p.s. the 2 rcoms are on loan. Setting 37.5 C and 45% humidity through incubation(raised to 60% for hatching). Temp has been extraordinarily stable throughout according to rcom readings.