Sorry, this article is older but has more general information for those who don’t keep chooks.

H5N1 affects birds, cows, cats, and humans (and more). High mortality rate. No known human to human transmission yet but it’s global, we’re like the last place that hasn’t got it, and the risk to our birds is now considered high. There’s a chance the virus may enter from the north when birds migrate in spring.

Structure and behaviour similar to Coronavirus. In addition to direct contact or respiratory and surface transmission it can also affect the safety of fresh milk and eggs (fact check this but it seems to according to what’s happening in America).

Fingers crossed this doesn’t become Covid 2:The Electric Boogaloo