Actually a bird if given rice has a chance of the stomach swelling, but that is only if its only food source is rice. Also it diesn't matter that you have birds for some ducks rice can be harmful if given in an unhealthy quantity.Rice if cooked is ok for birds, of course a bird won't explode if you give it cooked rice, where are you getting this information from. I keep over 32 birds, most cockatiels and african greys, they love cooked rice and they have not yet exploded!
Advice required on campbell ducks pond:
I currently have a pond made of soft lining but I need to change this because the soil is clay and this has distorted the lining and because my back garden slops water is now running down up to my living room.
Purchased a hard plastic one, but could not find the same size as the current pond. this hard plastic is deeper: 46cm.
My question: would the 2 (non-flying ducks) be able to get out from this pond or is it too deep for them (notes: water would fill up this plastic pond probably up to 6cm down the top edges because of the overflow hole).
Thanks