It's important they have a balanced diet - which means a good quality feed and, once they've had a chance to eat that, some yummy but healthy treats.
So what are the healthiest treats for chickens?
The problem is that there's a lot of information out there in internet-land, not all of it accurate.
There are some foods which chickens should absolutely not eat - you'll find a list of them here.
This is a list of five of the best chicken treats which you can trust are not harmful and will make both your hens and their eggs stronger and healthier.
It's by no means a comprehensive list, but it's safe.
Remember though that, just like people, different chickens have different tastes.
What some will love so much that they're willing to fight for it, others won't give the time of day to. And what your chickens love one day, they will turn their beaks up at the next.
It's all a question of trial and error, and discovering what works well for your flock.
This is a question I'm often asked.
When raised by a broody hen in the wild or in a back yard, chicks will be introduced to 'treats' in the form of bugs and greens as early as a couple of days old.
In the brooder, I personally don't give chicks treats until they're at least a week old, more often I wait till they're two weeks.
And even then, I offer only healthy treats in small quantities.
Because treats are not a balanced diet, and chicks need to learn what their 'proper' food is before they fill their tiny tummies with treats.
Giving unlimited treats is like taking kids to a sweet-shop and telling them they can stuff themselves full of whatever they want. It's likely to end in tummy-ache.
And for tiny chicks, that can mean big problems.
Remember though, it's very important that as soon as you give your chicks anything other than a starter feed they will need to be given grit in a separate feeder - otherwise they won't be able to digest it.
For tiny chicks a dish of sand is fine - they'll take it as they need it.
Fruits are every bit as good for our backyard chickens as they are for us. Full of vitamins and low in fat, they're an excellent choice as a healthy treat. Make your hens an occasional fresh fruit salad and watch them blossom!
Planting a few fruit trees in your chicken run, or allowing your flock to free range in an orchard, works well as the hens will eat fallen fruit (the wormier, the better) and at the same time fertilise the ground.
I have apple, pear, fig, peach and persimmon trees in my run and there's nothing I like more than to shake a few ripe fruit from the trees for them in the late afternoon sun.
If you don't have space for full size trees try dwarf varieties, buy fruit when it's in season (and therefore inexpensive) or see if you can do a deal with friends or neighbours for some windfalls.Any chicken favourites?
This will depend entirely on your chickens. Mine have a particular liking for figs and persimmon, but won't eat apples unless they're soft or finely grated.
Chickens love berries so much they'll strip a bush bare and for good reason - they know what's healthy to eat. Berries are like a multi-vitamin pill for chickens - but much more tasty.
Packed full of vitamins A, B complex and C, they're also a good source of beta-carotene.
If you have space, plant some berry bushes in their run; they'll appreciate the shade as well as the fruits. Elderberry is particularly good at spreading.
I also like to add berries to leaves (can you tell my chickens are a little on the 'spoiled' side?!) with a few sesame seeds added for their protein - good enough to eat myself. And (guilty sigh) sometimes I do share.
All kinds of berries are fine for your hens to eat, including the 'berries' of rose bushes (rose hips), hawthorn and blackthorn bushes which are bursting with vitamin C.
They're particularly helpful in the autumn and winter when other fruits have largely finished and are more expensive to buy and, as an added bonus, the plants provide wild birds with some much needed nesting hedgerows.
Rosehips tend to be very hard so they're best either left to dry out, or grind them up before feeding. As a bonus, chickens love rose petals too so pruning in the summer means no flowers are wasted. Perfect.
Known as the 'cruciferous' vegetables, this group is also known as "super-veg" because they're so healthy.
I have to admit, though, that these are not the kind of healthy treats any of my chickens have ever really loved in the same way they love strawberries, for example (no different to kids, then!). But they're packed full of vitamins and disease fighting phytochemicals.
Of the three, cabbage has the most calcium (6.3% as opposed to 4.3% in broccoli and 2.4% in cauliflower) which is good for the egg-layers in your flock, and slightly more vitamin C.
But to be honest, any of these has a good level of anti-carcinogens and is a good choice of healthy 'treat' for you and your chickens!
I tend to spoil my hens by giving them just the florets as they seem to find the stalks too tough to handle, and I give them raw or grated, usually mixed with other healthy treats to make it more enjoyable.
As I said - picky.
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Carrots are so easy to grow that even I can do it - just spread a line of seed and watch them sprout.
I do mine in a raised bed and add some sand to compost to give them their ideal growing medium. Lift when the tops begin to poke through the soil.
Off the scale in terms of Vitamin A and with no fat at all, carrots are well known for their anti-carcinogenic properties for people and can also help to make your flock's egg yolks a deeper shade of orange.
Add them to other fruit and veggies on this list, grate them, serve them as leftovers, add them as some veggie goodness into a high protein winter feed - carrots are very versatile and my chickens love them.
They also love the feathery tops so don't waste them. I scrape the tops onto the compost heap I keep in the chicken run and my girls (and boys) are all over them straight away.
Nope. Feed as much as your flock will eat.
In many parts of the world dandelions are considered a weed, but they're so popular in the part of Italy I live that dandelion plants are sold at the local plant nursery and sell as soon as they're put on the shelves.
It's not unusual for people to use the leaves in salads during the summer months and for chickens, they're a feast. The flowers are also one of the greatest sources of nectar for honey-bees.
So it's actually good to encourage lots of dandelions to grow in your chicken run.
Dandelions have virtually no fat and are an excellent source of Vitamin A, potassium, iron and calcium, so they're excellent to throw into any high protein feed you're making to add value.
Or just pull them up from your garden and toss them to the chickens. They won't last long!
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I like to present information which I've been able to verify by scientifically proven sources as well as by my own chickens, so that it's as safe as possible for you and your hens. The following are some of the resources I used when researching this information about healthy treats for chickens.
Cuypers, Paul : 'Feeding your chickens berries'. Pub Aviculture Europe, 2014.
Jurgens et al : 'Poultry Nutrition and Feeding'. Pub. Animal Nutrition Feedbook, 2014.
(1) L.D. Ojabo et al : 'The effect of feeding sun-dried sweet orange fruit peel on pullet chick performance'. Pub. Research Opinions in Animal and Veterinary Sciences, 2014.
(2) Oluremi, Ngi and Andrew : 'Phytonutrients in citrus fruit peel meal and nutritional implications for livestock production'. Pub. Livestock Research for Rural Development, 2007.
(3) George Mateljan Foundation : 'World's Healthiest Foods', 2001 - 2014.
Bloom, Jessi : 'Free Range Chicken Gardens: How to create a beautiful, chicken-friendly yard'. Pub. Timber Press Inc., 2012.