chatot has to be level 21 to get the move chatter
In Diamond/Pearl, the Sinnoh Pokedex #102 is Chatot.
It's not possible. You can only get Chatot in Diamond, Pearl or Platinum, because that's the generation in which it was created.
as your going to sunnyshore city its in the grass north of the beach
It is Chatot. You find it in Routes 222 and 224 (morning and day)
go into your party and highlight chatot and hit (A) and under summary, where you see HM moves you will see chatter in blue (along with fly or any other outside of battle move you taught it) click on chatter and it tells you what to do from there if your chatot doesn't know chatter and it's below lvl 20 when it gets to lvl 20 it will learn it, if it is one of the ones you caught in the wild at lvl 40 or so and doesn't know chatter, go to pastoria city, in the house by the lake the move tutor will teach him chatter in exchange for a heart scale if you need a heart scale, go underground and dig in the walls until you find one if you don't know how to go underground or dig in the walls, google it because I'm wandering off topic here
Chatot you can get him route 222 & 224 or a kid inside his house in Eterna City will trade you for a Buizel.
starly,staravia,staraptor,murkrow,honchkrow,chatot,hoothoot,noctowl,wingull,and pelipper
To get a Chatot in Pearl you must travel to Eterna City. Once in Eterna City from there go to the big building next to the gym and trade a man a Buizel for Chatot.
I could never find chatter also so I just transfered one from my old pearl game. Hope this helps ;)
In oreburgh someone will trade a machop for abra and in eterna someone will trade you buizel for chatot.
In Pokemon Diamond & Pearl, Wooper evolves into Quagsire at level 20.
Sealeo evolves into Walrein at level 44 in Pokemon Pearl. Walrein can't be caught in the wild on Pokemon Pearl and must be evolved from a Sealeo.