Behaviour
Black Rough-winged Swallows are usually seen in pairs or small groups hunting for flying insects in woodland clearings and edges, above forest, or over water. Their flight is weak and fluttering. It is a quiet species, but it gives a soft chrrp alarm call. There is also a contact call described for as chirr chirr cheeeu for P. p. holomelaena and tseeu tseu tsss-ip for orientalis.
Read more about this topic: Black Saw-wing
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“The quality of moral behaviour varies in inverse ratio to the number of human beings involved.”
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“The methodological advice to interpret in a way that optimizes agreement should not be conceived as resting on a charitable assumption about human intelligence that might turn out to be false. If we cannot find a way to interpret the utterances and other behaviour of a creature as revealing a set of beliefs largely consistent and true by our standards, we have no reason to count that creature as rational, as having beliefs, or as saying anything.”
—Donald Davidson (b. 1917)