SOURCE: You can find Francis Barlow's illustrated edition of Aesop's fables (1687 edition) available online at Michigan State University. I've also transcribed the fables at the Aesopus wiki, with page images at Aesopica.net. This is fable 77 in Barlow. For parallel versions, see Perry 509.
READ OUT LOUD. Choose which marked text you prefer to practice with - macrons or accent marks - and read the text out loud until you feel comfortable and confident. Then, try reading the unmarked text at the bottom. It should be easy for you after practicing with the marked texts. :-)
MACRONS. Here is the text with macrons:
Querēbātur et Jovem supplicabundē rogābat Pāvo, cum sit Iunōnis Avis, et omnibus Avibus pennārum pulchritūdine praecellēbat, ut eandem etiam vōcis suāvitātem Iūpiter illī, quam perpusillae Lusciniae concēderet. Cui Jūpiter nēquāquam hoc fīerī oportere rēspondit nec omnibus dōtēs omnēs aequāliter impertīrī.
ACCENT MARKS. Here is the text with ecclesiastical accents, plus some color-coding for the words of three or more syllables (blue: penultimate stress; red: antepenultimate stress):
Querebátur et Jovem supplicabúnde rogábat Pavo, cum sit Iunónis Avis, et ómnibus Ávibus pennárum pulchritúdine praecellébat, ut eándem étiam vocis suavitátem Iúpiter illi, quam perpusíllae Luscíniae concéderet. Cui Iúpiter nequáquam hoc fíeri oportére respóndit nec ómnibus dotes omnes aequáliter impertíri.
UNMARKED TEXT. Here is the unmarked text - after practicing with the marked text that you prefer, you should not have any trouble with the unmarked text:
Querebatur
et Jovem supplicabunde rogabat
Pavo,
cum sit Iunonis Avis,
et omnibus Avibus
pennarum pulchritudine praecellebat,
ut eandem etiam vocis suavitatem
Iupiter illi,
quam perpusillae Lusciniae,
concederet.
Cui Jupiter
nequaquam hoc fieri oportere
respondit
nec omnibus dotes omnes
aequaliter impertiri.
IMAGE. Here is Francis Barlow's illustration for the story: