Mating

I have a pair of duh amazons. Male 11 female 8 I put them together in April. They have bonded and I have heard mating noises with them both in the nesting box and I have witnessed him on her back in the cage also. This has been happening over the last few weeks I would have expected to see eggs by now. They are very active in the nesting box. But no eggs yet. Wondering why this might be?? Do they only lay eggs in the spring????

Never heard of the species (or you are being creative with the abbreviations here)
(double ultramarine headed? )

But the pair (differend types of amazons) in Japies former house tried mating every spring for 15 years or so, never produced eggs.

Are they DNA sexed?
If it is a freshly coupled pair why not give them a year or so to get truely 'in sinc' with each other.
Are they outside or inside birds?
(Inhouse parrots are more likely to nest at crazy times)
Is the female in perfect physical condition? (if she is low on calcium she cannot produce eggs even if she wanted to)
What did their bloodwork tell you?
and very simple: how many times do you check the nestbox?
If they feel they are disturbed too many times... forget about it.
(just install a camera / red light not white/ to keep an eye out - if you haven't done that already of course)
...

Welcome!

My new friend, are you experienced in breeding, or do you have experienced help nearby? It's a profoundly complicated process, and so so SO much can go wrong, at every step. Do you have a Certified Avian Vet at the ready?
Here's a reference.
http://www.aav.org/search/custom.asp?id=1803
Regular vets often "wing it" with birds, although some are very dedicated and talented.
Christa asked some great questions.

My paired amazons female RLA and male OWA mated for several years and never produced eggs. I always assumed it was because they were too different types of amazons

Assuming you have the experience with breeding and raising young I would take them both in to a certified avian vet to see if there is a problem with one or the other’s health.
It’s a good idea to take the female in anyway because laying eggs is very hard on the female and she needs to be in top physical shape to lay.

Welcome to the community! I don't know what a "Duh" Amazon is, lol, I'm guess "Double ____ Headed"?

Have you ever bred parrots before my friend? As a long-time breeder myself, I can tell that if you've asked this question, it's likely that you don't know a whole lot about breeding birds, nor are you experienced in hand-feeding or the weaning-process, and with any species of bird, when you breed them, even if you're planning on letting the parents feed and raise the babies, you absolutely have to be prepared to have to take-over both raising/housing and feeding the babies at any moment, from the moment they hatch to the time they fully-wean. This means not only must you have all of the equipment and supplies before you allow any babies to hatch, but more importantly you must know how to hand-feed a day-old baby bird...It's not uncommon for the mother to die during egg-laying, for the parents to totally reject a baby or all babies, for the parents to purposely kick the babies out of the nest or physically harm them or kill them , etc. So you have to be ready to go, and hand-feeding a young baby parrot is potentially lethal for people who have never done it before...

So this all being said, I'd make sure that you own all of the proper equipment and supplies, and that you at the very least, especially with Amazons, find a local Amazon breeder to you, contact them, and ask them if they could mentor you for a while, and teach you how to not only properly and safely hand-feed, mix the formula correctly and keep it between 104-110 degrees F at all times during feeding, the feeding schedule based on age, etc., but also just as important is learning how to properly "Abundance-Wean" the babies, and not accidentally end-up Force-Weaning them...The last thing you want to do is mess-up the Abundance-Weaning process with Amazon babies, as they will end-up having serious neurological, psychological, and emotional issues that will make them almost impossible to be at all independent, able to ever entertain themselves, etc. You must know how to properly set-up a Weaning-Cage and when to first put the babies inside it (based on outward signs/behaviors that you must just be able to see and predict), and how to very slowly and gradually introduce solid foods and very, very, very slowly decrease formula feedings at their pace, not ever at your pace or the pace that you want them to wean at. So please, get yourself some proper hands-on training and experience before you allow this to happen (if it is going to happen)...

***As far as your pair, there are a million different things that could be going on here...Breeding birds is not at all like breeding dogs, cats, or any other animals/pets. Birds mate/breed emotionally and psychologically, exactly like people do, and as such you can't just put 2 birds of the same species and the opposite sex together in a cage with a nest-box and wait for them to start mating...And certainly not in the 4 months your pair has been together...Even if the pair has "bonded" with one another, there are several different types of bonds between birds, just like there are between people. So even if your pair seem like the best of friends, preening each other, sleeping snuggled-up with each other, etc., this doesn't mean they are both wanting to mate or become a "breeding-pair"...and just the same, just because you have seen the male "up on her back", that doesn't mean that they have mated, nor does it mean that the female wants to mate with him...Here are the questions you need to ask yourself to narrow-down what might be going on here:

-Have you had both birds DNA tested or were you given a DNA-certificate/test results from their prior owner(s), or are you simply trusting what their prior owner(s) have told you? If the answer to this question is that you were simply told by their prior owners that they are a male and a female and were given no documentation at all, then STOP, and get them both DNA-tested before moving forward. Just because you saw one of them on the back of the other, just because you think one "behaves like a male or a female", etc. means nothing, and you may very well have 2 males or 2 females...

-Have you had both birds to a Certified Avian Vet for a wellness-exam and Baseline Blood-Work yet, to assess whether or not the female is even able to lay healthy, viable eggs, or any eggs at all? It's quite possible that the female, if there is a female, has issues that will make it impossible for her to safely lay eggs. These are things that you need to know BEFORE breeding a bird.

-Have either bird been a part of a breeding-pair before? Were they successful in breeding a healthy clutch of babies in the past?

***This is very important, as the past history of both birds often influences their future breeding/pairing. If either bird was a part of a breeding=pair prior to this, and for whatever reason they were separated from their prior partner, this can effect how they bond with future partners. Knowing as much about their history as possible is extremely important, and must be taken into account...

****Going hand-in-hand with have a Wellness-Exam and Baseline Blood-Work done on each bird BEFORE breeding them, you also need to ensure that the female's Calcium levels are more than adequate, as the #1 cause of Egg-Binding is the female being Calcium-deficient.. (most important level to check, although a routine blood-panel includes other metabolic levels that are also indicative of whether they can safely breed and lay eggs or not). This will also influence whether she will lay viable eggs.

***Now, other than all of the above factors, you've only had them together for 4 months!!! I don't mean this to be rude or hyper-critical to you, but rather to educate you a bit and to try to make you understand why you really need to find an experienced parrot-breeder to mentor you before you attempt to do this...The fact that you "expected to see eggs by now" shows just how much you have to learn about this process my friend...

First, I don't know what you think "mating sounds" sound like, especially if you've never heard them mate before, but unless you have actually seen them physically mating then you cannot expect anything. And again, seeing a bird on the back of another means nothing, as two birds of the same sex will often do this as well. The fact of the matter is that when you put two adult, mature parrots together in a cage like you have, not only does every little thing have to line-up (assuming that you are 100% positive they are a male and a female, meaning a DNA test result on both of them), such as the bond between them being the correct bond, both birds wanting to mate, both birds ready to mate, both birds physically healthy enough to produce offspring, etc., it typically takes, conservatively, at least a good year before you're going to see any eggs, usually longer. The length of time depends on the species of bird, their health, and most of all, the bond between them and the willingness of both bird to want to breed. Putting a nest-box in their cage does not at all "speed-up" the process, nor does it influence either bird to want to mate or raise off-spring. It may induce "nesting behavior", specifically in females, but that does not mean that she will want to nest with the male that she is living with...Again, they think very much like people think when it comes to this process.

Look at it this way: Let's say you had purchased an already "proven breeding-pair" of Amazons, a pair that has already produced many fertile clutches of eggs and who has successfully raised many babies...The fact that you have moved them away from their home and put them into an entirely new environment, with all of the changes that go along with that process, well this will typically result in them not breeding again for quite a long time.

So when most experienced breeders purchase either an already proven breeding-pair of birds, or they do what you did and buy an adult male and an adult female from two different sources that have never met before, they typically go-into the situation simply assuming an expecting that IF they are going to produce offspring at all, that it's not going to happen for at least a good year or two, if not longer (depends on the species). And experienced breeders also know when a pairing is not going to work-out, and when they need to separate a pair, re-pair or re-home a bird, etc.

The bottom-line is that IF you do in-fact have a male/female pair of Amazons, and If they are healthy and able to produce viable offspring, and IF they do in-fact become a breeding-pair of birds, you've got a ways to go for them to start laying eggs. And even then, it's not at all unusual for their first clutches to be infertile, as they figure things out...So you need to be patient;...honestly, if I were you, the smartest and most responsible thing you could do right now is to remove the nest-box (as to remove the stress of the nesting behaviors a box, nesting material, etc. can cause, especially to the female), get the birds to a Certified Avian Vet so that both can get a DNA test, a wellness-exam, and baseline blood-work so that you know whether or not they are able to safely produce viable offspring, and just allow them both to form the necessary bond for them to both willingly want to breed. And while you're allowing them to do what they need to do, you should take full-advantage of the time and find a breeder local to you that is willing to teach you about hand-feeding, housing in the Brooder, and Abundance-Weaning. That way, if and when your birds are ready to start mating and laying, you'll actually be prepared and ready to handle the hundreds of things that are going to be thrown at you throughout this very complex and delicate process...

And please, ask any and all questions you might have here as well, don't ever hesitate...