queer bird vs odd fellow

queer bird and odd fellow both are nouns.

Word	Noun	Adjective	Verb	Adverb
queer bird	Yes	No	No	No
odd fellow	Yes	No	No	No

As nouns, queer bird and odd fellow are synonyms defined as:

queer bird and odd fellow: someone regarded as eccentric or crazy and standing out from a group

Other synonyms of queer bird include kook, odd fish, odd man out, queer duck.

queer bird (noun)	odd fellow (noun)
someone regarded as eccentric or crazy and standing out from a group	someone regarded as eccentric or crazy and standing out from a group