Foudia madagascariensis is usually known as "Madagascar Fody". The name "Red-cowled Cardinal" is used normally for the Paroaria dominicana, a bird that can't be more different to this Foudia...
Oops, you are quite correct. I was going from a photo of the zoo ID board where the reference photo had a large reflection over it. I saw something red and went for the ID... wrongly! Thanks for the correction.