I was not trying to say that the two-headed animal was absolutely a bat-eater, I do not have the knowledge to make that assessment and I gladly yield to others on that matter. All I was contending was that an Albino bat-eater could indeed occur.
What a wonderfully enlightened point of view, someone points out that you do not understand something and rather than consider that they might, just may be, correct you instead take the attitude that they are the stupid one...
You did misuse loci, your own words betray you:
Right there you say that all three types of Albino in retics fall on the same loci and then you say that they are all different/not compatible. If they all fall on the same locus then they would be compatible. Since they are not compatible they do not fall on the same locus.
There are (I believe) three separate and distinct Albino loci in retics:
Purple/White
Type II
Green
And this is just hogwash. The species are genetically similar enough to create a hybrid but they are not genetically similar enough for the hybrid to be Albino... The T-neg albino locus is the tyrosinase gene. Tyrosinase is tyrosinase is tyrosinase. Does not matter if it is in a retic or a Burm or a ball or a corn or a chondro or an iguana or a axolotl or a bullfrog or a budgie or a cat or a human. Same gene product in all of them and deleting it gives the same phenotype. If both parents lack the gene then the offspring will too. Basic genetics right there.