Errant saepe canes itaque et vestigia quaerunt[31].
How happily their characteristics are struck off in the line—
At levisomna canum fido cum pectore corda[32].
The various cries and habits of birds are often observed and described, as—
Et validis cycni torrentibus ex Heliconis
Cum liquidam tollunt lugubri voce querellam[33];
and again—
Parvus ut est cycni melior canor ille gruum quam
Clamor in aetheriis dispersus nubibus austri[34].
The description of sea-birds,