One raised around a second bird (7)

I haven't cracked this one yet — but the brilliant team at Times for the Times have:

UNIT (one) reversed [raised] containing [around] A + MO (second – moment). This South American bird has come up 4 times over the years and always gives me trouble. Attention to wordplay is needed here if one doesn’t know the word in order to avoid reversing A MO along with UNIT and coming up with TINOMAU.