How Spring Transforms Horse Behaviour

As winter loosens its grip and the first signs of spring arrive, horse owners across the UK start to notice a shift. It’s not just the grass growing or the days getting longer… it’s the horses themselves.

Suddenly, the quiet horse feels sharper. The steady one feels electric. The “been there, done that” gelding is now offering a little more opinion than usual.

Spring Behaviour in Horses, So what’s actually happening?

The Science Behind Spring Behaviour in Horses

Spring doesn’t just change the landscape, it rewires your horse’s internal system.

Longer daylight hours trigger hormonal changes, particularly increases in melatonin regulation and rising testosterone levels in geldings and stallions. Mares begin cycling more actively, and overall energy levels increase.

At the same time, fresh spring grass introduces a surge of natural sugars, which can amplify energy, reactivity, and sensitivity.

In short: more light + more sugar + more hormones = more horse.

Common Behaviour Changes in Spring

Many riders experience similar patterns during this time of year:

• Increased sharpness or reactivity under saddle

• More forward, sometimes overly forward movement

• Spooking at things that were previously ignored

• Playful or explosive behaviour in the field

• Reduced focus during training sessions

This isn’t your horse being “naughty. "It's your horse being physiologically switched on.

Why Some Horses Handle Spring Better Than Others

Not all horses react the same way, and this is where breeding, production, and early education become incredibly important.

Horses that have been correctly produced, mentally developed, and exposed to varied environments tend to handle seasonal changes with far more stability.

This is particularly noticeable in well-bred Iberian horses.

Lusitanos and PREs, when selected and produced correctly, often retain their rideability even as their energy increases. Instead of becoming chaotic, they become more expressive, more powerful, and more responsive.

It’s not less energy. It's better managed energy.

Turning Spring Energy Into an Advantage

Spring doesn’t have to be something you “get through. "Handled correctly, it can actually be one of the most productive times of year.

Here’s how to work with the change rather than against it:

1. Adjust Your Expectations

Your horse may feel different day to day. That’s normal. Ride the horse you have that day, not the one you had in January.

2. Refine, Don’t Fight

More energy is an opportunity to improve collection, responsiveness, and expression. Channel it, don’t suppress it.

3. Manage Diet Carefully

Spring grass can dramatically affect behaviour. Controlled turnout or adjusted feeding can make a noticeable difference.

4. Keep the Brain Engaged

Horses with active minds settle better. Introduce variety, poles, transitions, and changes of environment.

5. Stay Consistent

Routine and clarity are your anchors during seasonal shifts. Horses settle faster when the system around them stays predictable.

The Strathbury’s Difference

At Strathbury’s, we see spring not as a challenge, but as a proving ground.

It’s the time of year where you truly see the quality of a horse’s mind, production, and foundation.

Because every Strathbury’s horse has been carefully selected, produced, and acclimatised to the UK environment, they are equipped to handle these seasonal changes with balance and rideability.

Where others become unpredictable, a correctly produced horse becomes more—more expressive, more athletic, more alive to the rider.

Final Thoughts

If your horse feels different in spring, you’re not imagining it. You’re feeling the natural shift that comes with longer days and renewed energy.

The key isn’t to resist it. It’s to understand it, manage it, and ultimately… use it.

Because within that extra spark lies the potential for your best riding yet.