Highly doubt marijuana seeds killed the roo unless your family member was smoking hydroponic from an unscrupulous grower or seller. I have known a few people in the business and one kid we boarded for a bit was using battery acid, concrete powder, fly spray, hair spray, and basically anything and everything to make the buds he sold worth more because of the toxic effects. This had nothing to do with the marijuana but the seeds in there would have been dangerous. Marijuana seeds are often fed, legally, to animals. They are in fact an incredibly nutrient rich source that is well worth including in their diet... If you can legally get it where you are. Now they're being sold for human consumption too, but dehulled so you can't grow them, which is stupid, because the endosperm contains the most nutrience... Like eating white bread as opposed to wholegrain. The oil is sold to be consumed and used as a beauty and therapeutic product too. So much for toxic. I think the vet just couldn't figure out what was wrong with the roo, decided it was poisoned, and blamed it on weed seeds. Pet chooks are at an enormous risk of poisoning because they often live in suburbia and that entire environment is swamped with anti-biological toxins... He probably ate a bug-sprayed cockroach or moth or something. Weed seeds are used as poultry fodder especially, but also fed to all livestock, pets, and humans. Now they are only legal dehulled but in old times they were of course fed whole. If all farms grew "marijuana" (hemp or various things it is confused with, but synonymous with nonetheless) --- like the law used to be --- they would have a smaller 'footprint' ecologically because of how multipurpose the plant is. It has uses far beyond 'getting high' not least of which are medicinal uses for which it should be legalized immediately, never mind its textile, nutritional, and other uses. No, I'm not a smoker, but neither am I caught up in the propaganda against that plant, which was initially deliberately misclassified as marijuana to allow its illegalization because it posed such a threat against the petrochemical byproduct industry, namely plastics, especially in textiles. It used to be law that every farm had to grow hemp because of how useful it was. It is not actually 'marijuana', which is a toxic plant nobody smokes or uses, but to which it looks similar; but it's called marijuana since the commercial textiles industries weighed in to banish it as competition, so that's what it's recognized as and that's what we'll call it.