Sorry we do not know what you mean by "vertabrats" but a duck is a vertebrate.
No it is not an invertebrate.
sadly ,no it is not it is a albino duck very rare :(
Its a vertebrate because it has a backbone
Like ALL birds, ducks have a backbone, which makes them vertebrates.
a duck is not an invertibrate becaus invertibrates are "anything" whithout a spinal column or back bone.(mammals, reptiles, fish, and amphibians such as frogs are vertebrates.)anything that is not one of these<-, is an invertebrate.
invertebrate - has exoskeleton
An invertebrate.
no
It is an invertebrate 
A bullfrog is not an invertebrate; it has a spine.
The octopus is an invertebrate... It has no skeleton.
seriously? wow....... did you pass 4th grade? invertebrate