There is a lack of citrus.
Religious symbolism of The Twelve Days of Christmas (The 12 Days of Christmas)

1 True Love refers to God
2 Turtle Doves refers to the Old and New Testaments
3 French Hens refers to Faith, Hope and Charity, the Theological Virtues
4 Calling Birds refers to the Four Gospels and/or the Four Evangelists
5 Golden Rings refers to the first Five Books of the Old Testament, the "Pentateuch", which gives the history of man's fall from grace.
6 Geese A-laying refers to the six days of creation
7 Swans A-swimming refers to the seven gifts of the Holy Spirit, the seven sacraments
8 Maids A-milking refers to the eight beatitudes
9 Ladies Dancing refers to the nine Fruits of the Holy Spirit
10 Lords A-leaping refers to the ten commandments
11 Pipers Piping refers to the eleven faithful apostles
12 Drummers Drumming refers to the twelve points of doctrine in the Apostle's Creed

This is something I find perplexedly amusing. I can understand the first (as to how the symbolism works). From there, I have a lot of trouble. I think my favorite is the Nine Ladies Dancing to Nine Fruits of the Holy Spirit. Frankly, I never knew he had fruit. Same with the Swans; how does that relate to gifts OR the Holy Spirit?

Note: I looked it up. I am highly disappointed, but the fruits are things like Love and Happiness and stuff. Which makes me sad. I liked the thought of the Holy Spirit wandering around with a fruit basket medley of pineapples and apricots and oranges.

...

As it is holiday time, I suppose it is most interesting to mention this. I already told Michael this, so he'll find a little more boring than most (I guess... I hope people find scientific facts interesting).

Parthenogenesis is wonderful, and interesting. I guess a very simple and holiday appropriate way to put it is that it's the Virgin Mary effect. Animal gives birth, but no male present to father it. It's seen most commonly in amphibians, after all because amphibians are really weird, can change their sex, don't need sexes, and in some rare cases, don't need oxygen. However lizards are a little cooler because they're a step up in the evolutionary scale and some species also use parthenogenesis. The most interesting lizard is the New Mexican whiptail, which is a hybridization of two other whiptail species. This was naturally done (i.e. In nature). However there are no males in the species. They reproduce by cloning themselves, essentially. They also display lesbionic relationships (after all, they ARE all female). One will take the role of the male, mount a female about to lay eggs, and just sort of... 'Pretend' she's doing something. Apparently the females who take the role of males more often have a better reproduction rate--as there are hormone processes that still happen when she takes the role of the male (it would be akin to humans having an orgasm, or sex when they're not trying to have a kid--hormones still happening). However the species is stuck, it can't evolve, mutate, or otherwise help itself when a large problem occurs, such as disease.

There is, however, the Komodo dragons, which have both male and females in its population. Komodo dragon chromosomes are different than the normal ones we think of. Females have WZ and males have ZZ. Like the whiptails, the female Komodo dragons can, as well, use parthenogenesis when they need to. If there are no males present, a female will give birth on her own--creating the combination of either ZZ or WW (which is inviable). A female will always give birth to a male. Which is a large advantage, and something that sadly couldn't happen with the whiptails.