This is actually a myth! Birds eat rice from the fields during flood season all the time, and it has no effect on them, the same as rice from the supermarket!
During the flood season the rice is full of moisture, when birds eat dried rice, or anyone eats dried rice, it's bad for them.
i just can't stop mixing up -er for plurals and -en for definites endings! By the way do we add endings to verbs in any situation?
There are verb endings for the different tenses, but you do not have to conjugate them for person, number or gender.