The Quran (Ali-Imran(3):59) is categorizing the case of Jesus (a.s.), with Adam (a.s.), as a will of Allah, and pointing out that when Allah wants to create, He commands that to be, then, that starts to exist.
Listing the case in the category of Adam-like (creation) miracle is sufficient for explaining the case. Thus, the news through the Quran is not confusing.
But furthermore, with a dose of nature-knowledge, people have kept pointing out that the nature has lots of species with parthenogenesis (fatherless birth) capability -- thereby, exemplifying the "naturalness"of the case. If so trivially happening, though, perhaps that would not be listable in the same category as creating Adam (a.s.), as the statement of the Quran might hint. So, that is not quite surprisig to find out that, explaining that [naturally] as a parthenogenesis, faces a problem. With the XY sex-chromosomes system that we humans have, parthenogenesis would normally give only female babies (while Jesus (a.s.) was male). In contrast, with WZ (ZW) sex-chromosomes (like that of birds), they are male.
That is not to suggest that species have too little to adapt to circumstances. But if a specific genomic-flexibility is not in the genome (so far as we have known), then that would be surprising to see (surprising, except perhaps to macro-evolutionist extremists, who fancy that anything might converge to [almost] whatever, "naturally").
The solution to the XY-vs-ZW problem, is again findable in the Quran, that lists (a few, if not all, of) the miracles of Jesus (a.s.), and there is the case of Jesus (a.s.), with permission of Allah, making a bird shape, that Allah then was giving life into (AliImran(3):49, Maide(5):110). That fits the creativity case.
That is, Allah is able to give the full bird-life (complete with the sex-chromosomes, and expressing that) to lifeless shapes, let alone set a (Y or X) sex-chromosome of a human, to make that a male, "like birds." After all, Allah is the Creator of all.
The bird-creating case, fits to the case of similarity to Adam (a.s). Allah is not limited to the regular likelihoods. That is the point. Just how He was the Creator giving life to Adam (a.s.), and to those birds, He has chosen to create Jesus (a.s).
Lots of us (muslims) have lots of satisfaction in witnessing scientific miracles of the Quran -- precision in telling of points that science has found out only in the last century (or, more than a millenium after the Quran came to us). The listing of the bird-creating case, that turns out to supplement the Jesus (a.s.) parthenogenesis case perfectly, sounds like, that is a well-thought argument. Not "arbitrary" miracles.
If parthenogenesis were happening only with WZ-chromosome species, that would be less interesting. But XY-chromosome species have parthenogenesis, too. Thus, by only looking at the parthenogenesis cases in the nature, you would not necessarily guess that "only birds would have male babies" and would not think/guess such a bird-creating "story" to be valuable/necessary (and specifically, that is, for the case of Jesus (a.s.) himself, rather than for all those of other prophets (a.s.), not even Muhammed (s.a.s.)). That might have sounded as a casual listing of a few miracles, that now science may notice that, listing that miracle, is miracle, too.
Allah is the God, the Creator, and author of not only the Quran, but author of Bible/Torah, as well. In cases, when some of the scientific prowesses (perfect word choices, turning out to be scientific miracles) get attention (such as Allah, the God, controlling the expansion/enrichment of the Universe), other people point out that similar words had been in the Bible/torah, too. So far, I have not read all (not even most) of the Bible/Torah, but looking up for the word "bird" (in KingJamesV Bible), that miracle of Jesus (a.s.) does not seem to be there. If so, we have the case report exclusively through the Quran.
I have kept thinking that, the Quran report of the visit of the Holy Spirit, archangel Gabriel (a.s.), to Virgin Mary, might correspond to the hadiths that tell of angels visiting the (lifeless) embryo, carrying life (soul, and setting the sex, and the fate of the prospective person), at around 40th day (40-42, presumably).
That is the moment of setting of the life parameters (fate) of a person, by angels, as Allah tells to those -- like specifying how genomes may work (but fate is more).
That is, all of us have been brought by angels (at about 40th day at womb), but Jesus (a.s.) was in a category that was brought by the Holy Spirit, archangel Gabriel. That makes especially sense, to inform the virgin, about the pregnancy, as she would introduce Jesus (a.s.) to her people -- because Gabriel (a.s.) was the messenger archangel, carrying messages to [all] prophets (a.s.), too.
That fits to the concept of a (parthenogenesis) spontaneous zygote, well. Otherwise, if Holy Spirit were to carry Jesus (a.s.) as a zygote, rather than the life/spirit of Jesus (a.s.), then there is nothing spontaneous within the womb, and the concept of "parthenogenesis" would be only conceptual, w.r.t. result (that yomight think reminds parthenogenesis), rather than at any point of the biological process.
In summary, the visit might have been not necessarily the 1st day in womb, but around the 40th day..
So far as I have understood the 19th (Meryem) sureh (chapter) of the Quran, she (unknowingly) might have taken her travel toward East, after having the (lifeless, yet) Jesus (a.s.) in her womb, and at around the 40th day, Gariel (a.s.) came with the soul/life of Jesus (a.s.), and informing Mother Mary about the pregnancy. (Inferring that, now that Meryem(19):22 is following Meryem(19):21, that fits, because that is telling of the case having been written from the start. Then/therefore, pregnancy happening afterward, and aftr that, the travel to East (Meryem(19):16) starts).
If the visit was/were in the first day at womb, then that would be some totally irregular case. But so far, all of the hadiths and those Quranic verses seem to fit to the process as we know that happens regularly for all of us (other than a spontaneous embryo, and extra miracle that, that was male).
Therefore, I guess, the visit was at around the 40th day. Allah knows best.