Petrels rhymes with:
australs, central's, entrails, kestrels, minstrels, neutrals, nitriles, nostrils, april's, australs, balmorals, barrels, carol's, carols, carroll's, cathedrals, central's, chorals, corals, entrails, erol's, errol's, florals, gabrall's, garrels, garrols, harrell's, imperils, jarrells, karels, kestrels, laurel's, laurels, loral's, merrill's, minstrels, morals, murals, neutrals, nitriles, nostrils, perils, plurals, quarrels, scoundrels, sorrell's, sorrells, sorrels, spirals, st_charles, surles, urals
Petrels sounds like:
patrol's, patrols, petroleos, petroles, petrology