So basically the portal event in Rines was:
WARNING, SPOILERS!!!
A dozen of talking elephant-sized chickens came from the portal and started their carnivorous spree. People are thinking those chickens are what the daimons actually look like, hence the confusion. They are in fact not sinister, they just suffer identity crisis due to never experiencing the goodness of proper birdfood and turning to human flesh for sustenence instead. Bad luck has it that a crafty (proper) daimon dressed as a trader shipped all birdfood out of Rines, so there is no salvation in sight.
I have't seen many portal events in my time, isn't that how they usually work?
I might've gotten one or two things wrong, so take it with a pinch of salt (or birdfood).
Yup
