Have my Gouldians pair-bonded?

[Icearstorm]

I bought a red-headed, purple-breasted normal male and black-headed, purple-breasted normal female gouldian about a couple months back. Unfortunately I was not aware of the moderate genetic incompatibility between red- and black-headed gouldians, but there's not a whole lot I can do about it. They are the only gouldians in their flight, along with six society finches (though I have separated two society finches because one of them eats eggs and babies).
The gouldians stay pretty close to one another and roost within a few inches of each other at night, and call back and forth during the day. They are more tolerant of each other than they are of the society finches, only hissing at each other occasionally (I'm in the room for about two hours a day, and have only heard them hiss at each other every few days). They regularly hiss at the society finches if they come within a couple of inches, and occasionally chase them off. (Only the female truely hisses, while the male makes a slightly lower-pitched skreee call.) None of the society finches seem too bothered by the goldians, and vice vesa. It seems that the hissing is usually more of a personal (birdal?) space thing than territoriality.
The male has spent the last few days stuffing grass into the nestbox, but the female has not gone in it, though she has stuck her head in a few times. The male also sings and follows the female around with grass quite a lot, but doesn't dance for her. He was in perfect condition when I bought him, and currently seems very healthy. He was sleeping frequently for a little while, but recovered in about two days with some heat. He continued singing about a week and a half later and has since acted fine.
The female is generally more aggressive, which is odd considering she is the one with a black head. She occasionally chases the society finches while hissing, while the male only chases the societies when they get close to his nestbox while he is calling to the female. The female doesn't seem fully in breeding condition and has a few missing head feathers (barely noticable) and some broken/missing tail feathers. She was not in good condition when I bought her (of course she had to hide it until I got home), and often sat somewhat fluffed with her eyes closed. I treated everyone with Ivermectin and put the heater on for several mornings, and she seems a lot better now. She did not have breathing issues, but may have a minor scaly face mite infestation resticted to the middle sides of her beak. She is a much better flier now (but still not that great) and is no longer fluffed up. She occasionally sits with her eyes shut, but not nearly as often.

And now for some not-so-great photos:

[MariusStegmann]

Icearstorm I would not call it an incompatibility. In the wild yes, but your birds has been domesticated for many bird generations. I also have a a red head cock with a blackhead hen, gouldian pair. The only drawback is that you could possibly breed more cocks than hens. If the tip of your hen's beak is black, the you know that she is in breeding condition. There is some black there already. The cock's beak is red, so you know he is ready to breed.

[Icearstorm]

MariusStegmann
I never really thought about that; I've just heard that pairs with two different head colors had infertility issues. But I'm glad to hear they have been interbred for long enough in captivity to mostly resolve the issue. Does the red head continue to be linked with higher testosterone levels and shorter lifespan after so many generations of captive breeding?
The female's bill has faded since I got her; almost all of it was black, and now just the tip is. It looks like it's no longer changing, so it may have faded due to her being underweight. Now that she seems stable, I'm hoping she'll get into breeding mode soon.

[lovezebs]

Icearstorm

How long have you had them?

If her beak is not black, she will not be interested in breeding.
Was she with other Gouldians when you first got them?

[Icearstorm]

A better photo of him (and one of my male chocolate self society finches)

A better photo of her

lovezebs
I have had them for about two months. They both were with other gouldians; the male was in an all-male cage within earshot of females at a pet store and the female was in a small cage with a mix of other gouldians at the Central Florida Fairgrounds bird show. The female still has a bit of black on her bill, but the part closer to her head is now a lighter grey color. It hasn't gotten any duller since. Do you think she has scaly face mites? Her beak looks a bit deformed.

[Icearstorm]

I don't think they will breed this season; I just got a glimpse of their wings while they were preening, and it seems like they are moulting. Both birds have 4-5 slightly shorter primary feathers on each wing and seem a bit more itchy than normal. I haven't noticed any pin feathers (except for one around the greater coverts on the female's right wing), bit there is a good chance they are removing them pretty quickly with all their scratching and preening. The male still carries around nesting material and sings; he even did the hopping dance for her for a couple of seconds. It's good that their moults are synching up; they should also come into breeding condition at the same time next season.