Haylage

I'm not really sure what Haylage is but I've been given 4 black bags of it - bought in error for soft hay for chinchillas - not really sure what they are either but their loss is my gain. 

My original thought was chicken bedding but, is there a better use for it?  Mulch, earthing up spuds? It seems to have seed heads so I'm not sure about spreading it around too much. 
Any advice welcome.

Haylage is not quite dry hay. It’s animal feed not bedding. Don’t use for your chickens. Mulch or Earth up spuds with it would be good. Feed mr greedy. It’d make great compost.

Thanks SC. I knew somebody would know what it was - and that somebody would be you.

Haylage smells like ripe bananas - either that, or I have 4 bags of bananas with a few wisps of grass on top.