I wouldn't be surprised if the hybrid was fertile. There all Hoplocephalus. And as the Broad headed snake is listed as 'vunerable' I would have thought it would be illegal to hybridise it?
http://www.environment.gov.au/cgi-bi...?taxon_id=1182 http://www.environment.gov.au/cgi-bi...LES_VULNERABLE Threatened species
Categories of threatened species
Threatened fauna and flora may be listed in any one of the following categories as defined in Section 179 of the EPBC Act:
Extinct;
Extinct in the wild*;
Critically endangered*;
Endangered*;
Vulnerable*; and
Conservation dependent.
http://www.environment.gov.au/biodiv.../recovery.html
I wouldn't think hybridising the Broad headed Snake (hoplocephalus bungaroides) would be in the best interests for any recovery plan, conservation or for the species future myself.
