Rough estimation about the occurrence of biparental care among species of birds (~90%) and species of mammals (3-5%):
While biparental care is very common among birds, only a small percentage of mammalian species show this feature.
Hopefully some interesting bits of information extracted from science and non-fiction literature. (There are also some poems and aphorisms scattered throughout this blog.) Sachthemen und Sachtexte. (Zusätzlich finden sich hier einige Gedichte und Aphorismen.) [This blog reflects, in a semi-autistic way, some bits of information which I enjoyed very much.] [Was hängenbleibt oder mal länger durch den Kopf geht wird hier notiert.]
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