I love azaleas but they don't do well here; I've tried about 5 different types. Lack of water isn't the problem, nor the ph (in principle at least), I think it's either the wind in and of itself, or if it carries too much salt up here from the sea very occasionally.
Thank you to those who complimented my garden. In view of such, and as several have mentioned here or there trying to improve their yard with shrubs or evergreens, I thought it might be useful to share some of my most chicken-friendly species.
I highly recommend skimmia japonica if it will grow where you are; it is just in flower now and it has a wonderful scent, as well as providing year round dense but accessible cover for chickens. Tough as old boots too; survived every storm we've had, whatever direction it came from.
Pittisporum also works well here, and can be kept trimmed as a shrub or let grow into a small evergreen tree. Comes in various colours and variegations; we have 3 types. Also fragrant (but inconspicuous) flowers.
Eleagnus are good evergreens too, or ever-grey and with a stunning clove-like scent in one case we had (sadly no longer with us). I think they also fix nitrogen (like legumes) so are good for the soil around them.
Mahonia is also tough, also evergreen, and wonderfully scented flowers when little else is out. It's a large family and there is probably one to suit most types of soil and climate. Bit spikey, so best at the back, and def not next to a path, but provides great year round cover, leaving lots of run room at chicken-level.
edited to correct carbon to nitrogen re: eleagnus. More coffee needed!