"He rained flesh also upon them as dust, and feathered fowls like as the sand of the sea" (Ps. lxxviii. 23-27).
From this passage it is evident that the Selavim which were sent together with the manna were birds of some kind—"fowls of wing," according to the literal sense of the Hebrew; so that the theory that they were insects or fish must be dismissed as untenable. The question now remains, with what species of bird are we to identify the Selâv?
Respecting this question, there has been great discussion, chiefly arising from the fact that the various commentators endeavoured to show that the Selâv was not the Quail, but some other bird. Some, for example, take it to be the white stork, which is very plentiful in Palestine, and sometimes flies in such numbers that the sky is darkened as the winged host passes by. They base this supposition on the stature of the bird, which is so tall that it stands about "two cubits high upon the face of the earth." So it does, but this is a very insufficient reason for translating the word selâv as "stork."
In the first place, the words "as it were two cubits high upon the face of the earth" certainly do not refer to the stature of the individual birds. They are popularly taken to signify that the earth was covered with the bodies of the Selavim to the depth of three feet.
This, however, can hardly have been the fact, as in that case they would have utterly overwhelmed the whole camp, and crushed the tents by their weight. Moreover, there would have been no need of gathering them up, as they would have lain so thickly on the ground that the only trouble would have been to make a passage through them. It is not very easy to force a passage through snow a yard in depth, while to do so through the same depth of birds would have been almost impossible.
Neither could the Israelites have "spread them all abroad for themselves round about the camp." If the Selavim lay to the depth of a yard "as it were a day's journey on this side, and a day's journey on the other side of the camp," i.e. some eight or ten miles all round it, there would have been no space whereon the birds could have been spread. The sentence in question has a totally different signification, and refers to the height from the ground at which the birds fly. Taken in this sense, the whole passage falls into harmony, whereas in any other it involves a difficulty.
If the ordinary interpretation of selâv by "Quail" be accepted, the description is exactly correct. The Quails fly in vast flocks, and, being weak-winged birds, never fly against the direction of the wind. They will wait for days until the wind blows in the required direction, and will then take wing in countless multitudes; so that in an hour or two a spot on which not a Quail could be seen is covered with them.
On account of their short wings, they never rise to any great height, even when crossing the sea, while on land they fly at a very low elevation, merely skimming over the ground, barely a yard or "two cubits high upon the face of the earth." We may now see how needless it is to attribute the two cubits to the stature of the bird, or to the depth at which they lay on the ground.
There are other reasons why the Selâv could not be any species of stork. In the first place, all the stork tribe are included among the list of unclean birds, and it is not likely that the Almighty would have neutralized His own edicts by providing food which the Israelites were forbidden to eat. In the next place, even had the flesh of the stork been lawful, it is of so unpleasant a nature that the people could not have eaten it. For similar reasons we may dismiss the theories which consider the Selâv to be a goose or water-fowl of any kind.
Some persons have thought that the sand-grouse is the Selâv. In the first place, the flesh of this bird is hard, tasteless, and disliked by those who have tried it; so that the Israelites would not have been tempted to eat it. In the next, it is a strong-winged and swift-footed bird, and would not have satisfied the required conditions. It flies high in the air, instead of merely skimming over the ground, and when it alights is fresh and active, and cannot easily be caught. The Quail, on the contrary, after it has flown for any distance, is so completely tired out that when it alights it crouches to the earth, and will allow itself to be picked up by hand. It has even been trodden to death under a horse's feet.