Proving Bible passages are correct is fun, but I'm afraid this will be the last one I look at.
From here:
**Ostriches definitely "leave" their nests -- in a study of 57 nests, Bertram found that "most were destroyed by predators after surviving for different and unpredictable periods of time." [25] As a result, "The great majority of ostrich nests did not produce any chicks, mainly because of predation." [71] Only 5 out of 57 had successful hatchings. [77]
**The secondary female ostriches -- what Bertram calls "minor hens" -- laid eggs in the nest, but thereafter "took no part in attending or guarding it, nor later in incubating it." [57] This sounds like "forsaking" and "cruel" behavior, subjectively speaking, to me! Bertram confirms the behavior of shoving the eggs of minor hens out of the nest as needed for space; only 20 eggs at most could be covered. This happened "at most incubating nests" [65]. The eggs shoved out "eventually rotted or were destroyed." [66]
**The male spends 71% of the incubating time on the nest; the major hen, 29%; the minor hens, as noted above, none.