It's time to drop the "Chop" - Whole food is better for our birds.

So here it is, a promised rewrite of an article I wrote last year (but lost a day before publishing) which I am going to do my best to recall for you.

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If there's one thing that seems to thrill most bird keepers, and maybe animal keepers of every sort, it is preparing food for our beloved charges. we have since the dawn of aviculture more or less prepared this with a chef like level of precision. It has been ingrained in generations of bird keepers as a skill and a source of personal pride. On social media you can often see photos of the "meals" prepared lovingly for our birds.

But what if I told you this is not only unnecessary, but actually counter productive in most cases and probably does more to please us than it does for the birds in our care?

Before some readers consider grabbing a pitchfork and a torch, I too spent a couple of decades mindlessly chopping food up, just... because. Granted, it feels satisfying to do for sure, but there are so many things you could be spending time on that would improve your birds life even more. I'd add also that at various points in my bird keeper journey I've been an all fresh feeder, an all pellet feeder and several stances in between, all had their pros and cons. These day's I'm looking for a mix somewhere between good nutriton and good mental health for my birds.

 

That got your attention didn't it?

 

Firstly we have to accept that our birds in the huge majority of cases do not need a happy mix of foods and indeed in the wild, this would never occur, in fact the idea of a bowl is a completely alien one and comes from our anthropocentric tendency to apply human lifestyles onto animals even if it is not necessarily best for them. If we can start looking at how wild birds feed we can start feeding our birds in far more interesting ways both for us and for them.

So I hear you ask, if we do not chop, how do we present foods to our birds, and how do we get them to enjoy a healthy diet?

We think about the species and how it feeds in the wild, what challenges it would face in that environment and how we can replicate this in human care. A great and age old example is what some keepers call "spiking" and involved taking larger food items like whole fruits and vegetables and skewering them on metal kebabs or branches. Historically this has been done since aviculture began, but has often been treated as an enrichment method rather than a complete presentation. If you can present whole food every day in a natural position, hanging, skewered or otherwise, why wouldn't you? Knowing that sitting stationary at a bowl like a bored McDonald's customer is the most unnatural and mind numbing way to feed any bird is key to motivation yourself to... BIN THE BOWL!(C)

OK, so of course there are some cases where bowls are needed, presenting water in a limited environment for example, or presenting a mainstay food like a pellet that works as a "buffer" food but is not highly motivating in most cases, but in general any fresh foods are rewarding enough to justify the effort for a bird and we should resist the urge to chop and feed out in a bowl.

These Purple crowned lorikeets are enjoying the challenge presented by removing thier own bites from this apple whilst balancing on the branch. There are probably even more challenging ways you can think of to feed this item too.

The main visual benefit of feeding in a natural way is the increase in your bird's productive behaviour. What might have taken a few seconds at the bowl to wolf down could take several minutes or more and require a far more advanced set of behaviours to obtain. Remember, every second your birds spend not being idle is adding up to a better life. Being realistic, wild birds spend many hours per day moving around and foraging, so we need to do our best to recreate this for them, resisting the urge to make it easy for them - for the record you need to monitor feeding closely at first to know if the individual can actually access the food, start out with something high reward that they do not strictly need and work through the diet from there until only the unavoidable bowl items remain fed in bowls.

Some examples I have used or seen include:

Large frugivores - offering large chunks or whole fruit on branches as high as possible, often in locations that require effort to access

Insectivores - scatter feeding insects in random locations throughout the day or setting up timed feeders at random intervals, creating situations that require natural behaviours to be expressed, like foraging, digging or hawking,

Carnivores - offer whole large carcasses that require effort to break into or whole smaller carcasses that can be presented in natural ways, hidden, hung up, hidden in trees etc... Whole eggs or chicks for example can be given in artificial "nests" to provide a challenge to the bird. 

Nectivores - Present nectar diets in ways they may be found in the wild, feed fresh non toxic flowers and blossoms alongside to provide variation and stimulation.

Seedeaters - Whole seed heads can be offered in ways similar to how they might be found in nature, on walls, upside down, all sorts. You will be surprised how agile your birds are once they get used to feeding in more athletic ways.

These are just a few of the more obvious examples of how you can immediately improve your bird's nutritional welfare and save yourself time doing unneeded preparation, giving you time to concentrate on coming up with more and more creative challenges to provide your birds with.

For these systems to work, you will require some adjustment to your feeding plans and each situation will be different, but as an example I'll show a simple plan for a commonly kept type of bird, a turaco.

Disclaimer: this is not an accurate diet, it is just to show the theory and does not represent a guide to feeding these species.

Let's say your turacos receive the following each day every day, chopped in a bowl.

 

50g papaya 

50g mango 

50g steamed carrot

50g steamed sweet potato

50g apple/pear

50g steamed green beans

50g steamed beetroot 

Ad lib access to turaco pellet

Ad lib access to water

 

OK, so a fairly standard portion if you're feeding out your veggies (which you are right?).

But we can also feed the same volume of food like this: 

 

Monday - 350g papaya

Tuesday - 350g steamed carrot

Wednesday - 350g apple/pear

Thursday - 350g steamed beetroot

Friday - 350g mango

Saturday - 350g steamed green beans

Sunday - 350g steamed sweet potato

Ad lib items offered as usual (unless you have an even better idea forming?)

 

As you can see, this fairly simple change offers several benefits, as discussed it only requires you to cut a rough chunk of the food item to the weight required and present it in a challenging way, the other benefit is that once your bird gets used to this diet routine, they will start eating their "veggies" which here means the less rewarding food types for any type of bird. Birds in human care often use the quickest possible means to acquire the highest number of calories. As a result when offered a daily mix up, they tend to pick the most calorific foods first, couple this with a general trend of overfeeding in aviaries, birds are able to hit their daily calorie needs quickly and not touch the dreaded "veggies" in whatever form they take. It's the same reason humans crave sugar and doughnuts = easy, quick calories; our ancient primate brain from 10,000BC still loves that gunk! - these instincts are hard wired in our birds too and a few centuries in aviaries can't undo hundreds of thousands of years of evolved survival behaviours.

Long story short, when these high calorie options are not available on tap each day, the birds need to feed on other food types to hit this magic number, in turn improving the variety of foods they consume, rather than reducing it. If we start thinking about food seasonally over weeks and months rather than days we can see the long term benefits too. They also have the added benefit of reducing possessive behaviour and squabling between individuals in mixed spaces - everyone has the same!

A handful of good scientific studies now demonstrate that birds activity budgets are considerably changed for the better by feeding this way, if indeed this was not anecdotally obvious to the thinking bird keeper.

Over the long term, if conditions are suitable, you can take the next step for herbivorous species by planting their spaces with the types of plants (or workable analogues) that they would make use of, think fruiting species for frugivores, heavy flowering species for nectivores and in some cases these plants may even draw in wild insects for your insectivores. In this sense the offerings are truly random and can really pack out their day feeding or even just checking for ripeness or suitability – these are all still valid behaviours and keep their brains ticking over.

The welfare benefits of feeding like this could form their own topic across the taxa which we don't have the scope for in this post, maybe we will dive deeper in future, but I'll leave that part there for now. Feed your bird's mind, not just their tummy.

 

Nectivorous birds really enjoy the real thing and the stimulation it offers, even if it must be just a part of their wider diet.

It's worth also touching on the potential risks of feeding out chopped food.

In some situations bird feed is prepared the day before and stored overnight or longer, pre chopped in a state of nutritional decline. This is a problem for two reasons, the first being nutrient loss. Several key vitamins are damaged by oxidation, with the content starting to drop immediately from the moment the mass of the food item is exposed to oxygen, think about an apple or banana chopped, they start to brown very fast, this is due to nutrient oxidation in the tissues. Vitamin C jumps to mind as a vitamin that oxidises really quickly in open air.

The second issue is that disease pathogens settle quickly in the environment and prefer damp, calorie rich environments. Whilst many birds naturally carry a diverse flora of very alarming pathogens, it is not beneficial to create situations where large monocultures of a certain species can develop unchallenged.

So these two issues can occur anywhere, even on whole food items, but the risk these present is one you may already know but not have connected to feeding birds - surface area:volume (here we will say Sa:V)

When we chop our foods we instantaneously increase the ratio of available surface area to tissue volume. The smaller we chop, the more skewed this ratio becomes. This provides not only a much faster rate of oxidation as oxygen now has very easy access to almost all of the internal volume of the food, but also a massively increased surface area for nasties to settle. Compound this with time in storage and exposure to the environment, you are creating risks for no real benefits.

Feeding larger items maintains a decent Sa:V and makes it much harder for oxygen to diffuse into the food and damage nutrients. As a bird feeds on parts of the food, chewing or tearing off chunks themselves, they are only ever exposing new surface areas as they feed, up until the next time they eat, rather than those fresh areas having already been oxidised and exposed many hours before at time of chopping.

 

This Black vulture is presented with a full buffet of challenges in the form of this carcass. Feeding this way massively improves the quality of the time spent feeding versus idle behaviours in predatory and scavenging carnivore birds.

These methods are of course going to be unique for each bird species based on it's ecology and natural behaviour, but nutrition and physics are the same for all species, they are all subject to the same rules. So far I think the only type of bird where feeding like this can be a challenge is natural berry feeders. Often the fruits available for them are domestic fruits that are way too high in sugar compared with the types of berry found in nature. In these cases it can be a challenge for small birds to tear off pieces of food from large items. In this case a three fold approach can be taken, feeding out large items they can handle, also offering "wild" berries when available and sourcing a good pellet that can replicate the typical item size they would biologically find in nature, some birds are not made for large foods all the time. That said, interestingly most berries have naturally higher amounts of oxidising nutrients like vitamin C.

If I've convinced you to apply this to your birds, whatever species they are and however they live, it can be far more exciting for them (and you). You may initially miss the Pierre White culinary satisfaction of chopping a mountain of flawless apple, or removing the organs from a carcass, but that will soon be replaced with the satisfaction of watching your birds behaving in exciting new ways and generally keeping much busier than before.

The takeaways are:

- DROP THE CHOP!

- BIN THE BOWL!

- FEED YOUR BIRD'S MIND!

And as ever, all with a good dose of PFR - Performance, Feedback & Revision.

 

And if you still feel an uncontrollable compulsion to chop, take up cookery and channel it into yourself!

I hope that has been helpful and insightful, until next time...

 

Stay birdy,

C.

 

NEWS: If you've made it this far and are still excited to learn more, you might be interested to know that we have recently set up a facebook group to help push forward thinking bird
keeping and discuss challenges and ideas. You can find it by searching Aviology: aviculture 2.0 on facebook, or using this link

I may see you there!