Pokémon "Diamond and Pearl"

Professor Birch is a professor in the Sinnoh region. Regional professors issue starter Pokémon to trainers.
Professor Birch is stern but understanding and intelligent. He appears to be around 60 years old. He has a gray beard and hair. He always wears a white coat, which emphasizes his image.

🌳 Common Forest and Road Pokémon (early routes) Starly and Staravia are the region's main birds, found everywhere. Bidoof and Bibarel are water beavers that have become the unofficial symbols of Sinnoh. Kricketot and Kricketune are musician beetles. Shinx is a popular electric lion cub found on the early roads. ⛰️ Cave and Mt. Coronet DwellersMount Coronet bisects the region, and is home to hardy Rock, Ground, and Steel Pokémon: Sinnoh Zubat and Golbat are traditional cave dwellers. Geodude and Graveler are Rock Pokémon. Onix are giant stone snakes. Meditite and Nosepass are found on rocky ledges. Bronzor are mysterious steel disks.💧 River, Lake, and Sea DwellersSinnoh has many waterways where you can catch Buizel, a sea ferret, using a fishing rod or the Surf skill. Shellos are slimes that have two forms depending on which side of Mt. Coronet they are caught on (pink in the west, blue in the east). Magikarp and Gyarados are classic water-types. Tentacool are often a nuisance when swimming in the sea.
🌲 Rare species on "Honey Trees" By smearing special golden trees with sweet honey, after a few hours you can attract unique wild Pokémon:

Piplup: A water-type penguin Pokémon. It usually takes a long time to bond with its trainer. Despite being a water-type, it can barely swim, and it can't stay in water for longer than 10 minutes.
Prinplup (Piplap's evolution) evolves from Piplup at level 16. It grows in size and becomes stronger than its previous form. Its type remains unchanged.
Empoleon (the evolution of Prinplup) evolves from Pirinplup at level 36. Its introductory type is Steel. It becomes significantly larger, and its head has three golden appendages resembling a crown. The longer these appendages, the stronger the Empoleon.

Chamchar: A fire-type monkey Pokémon. Very active and cheerful. Where its tail should be, a flame burns instead. When it sleeps, the flame goes out.
Monferno (the evolution of Chamchar) evolves from Chamchar at level 14. It grows a long tail with a flame at the end; the better the Pokémon feels, the brighter it burns. It gains a Fighting-type trait in addition to its Fire-type trait. Its front legs are very agile, and it can swing them at incredible speeds.
Infernape (Monferno's evolution) evolves from Monferno at level 36. Its type doesn't change, but its strength increases significantly. It's very agile and fast. Its tail still has the same flames.

Turtwig: A grass-type turtle Pokémon. Kind and nature-loving, it resembles a small turtle. A plant grows on its head; if Turtwig gets thirsty, this plant may wither. It needs to drink to keep the ground on its shell moist, which makes it stronger. Despite being a turtle and having a shell, it cannot hide in it.
Grotle: (Turtwig evolution) Grotle evolves from Turtwig at level 18. It becomes very large and clumsy, often causing it to lack confidence. Thick bushes grow on its back. When the Pokémon is feeling well, these bushes may begin to bear berries, which often attract other Pokémon.
Torrtera: (Grottle's evolution) Torrtera evolves from Grottle at level 36. It becomes even larger and more massive. A huge tree grows on its back instead of bushes. Ground-type is added to the Grass-type. This Pokémon is usually immobile due to its sheer weight.

The Sinnoh region is a vast island with a massive volcano in the center. This region is famous for its forests and natural beauty.
In any region there are three starter Pokémon, which are given to beginning trainers.
Sinnoh Stratists:
Turtwig (level 1) ➡️ Grottle (level 18) ➡️ Torrtera (level 36).
Chamchar (1 level) ➡️ monferno (14 level) ➡️ infernape (36 level).
Piplup (1 level) ➡️ prinplup (16 level) ➡️ empoleon (36 level).