answer by: Ruben Lanckriet
I have no official confirmation of such research.
In december I and a collegue of mine, Dr. Lanneau, have written a letter to the authorities on the topic in which we have given some arguments relating to pigeons and pigeon racing. This had succes as now the pigeons do not fall under regulations for other birds.
From the scientific data I have now, we can not say that pigeons can't contract the agressive variant H5N1. On the other hand there is also no data that shows that pigeons are able to transmit the virus.
It still is a fact that pigeons are in general much less susceptible for the virus compared with most other avian species and even compared with carnivores like cats. It is proven that for example cats can get sick and die from the H5N1 (with high rates) and can transmit the virus to other species.
There has also never been a report of mortality in groups of pigeons like it has been the case for other avian species (and even for tigers in Asia). If you know that the virus is endemic (present in a lot of birds) in Asia, you understand this indicates the relatively higher resistance for the virus with pigeons and that it is less important for epidemiology.