perching bird vs percher

perching bird and percher both are nouns.

Word	Noun	Adjective	Verb	Adverb
perching bird	Yes	No	No	No
percher	Yes	No	No	No

As nouns, perching bird and percher are synonyms defined as:

perching bird and percher: a bird with feet adapted for perching (as on tree branches); this order is now generally abandoned by taxonomists

Other synonyms of perching bird include Insessores, order Insessores.

perching bird (noun)	percher (noun)
a bird with feet adapted for perching (as on tree branches); this order is now generally abandoned by taxonomists	a bird with feet adapted for perching (as on tree branches); this order is now generally abandoned by taxonomists
	a person situated on a perch