Clean, wash and cut the soup vegetables into pieces. Dice bread. Wash liver, pat dry, also dice. Heat the fat, fry the liver and 1/3 of the soup vegetables in it. Add the sausage meat and bread cubes, season with salt and pepper and knead everything.
Wash the pheasant, dab dry inside and outside, rub with salt and pepper. Put the filling into the pheasant, close the opening. Put the pheasant with bacon in a small roasting pot. Bake in the preheated oven (electric: 175°C/ gas: level 2) for 50-60 minutes.
In between, pour chicken soup and wine little by little. Peel and finely chop the onion. Heat the oil in a pot, fry the onions and the rest of the soup vegetables in it. Deglaze with remaining stock and simmer for about 15 minutes.
Add the lentils after about 5 minutes. Season with salt, pepper, vinegar and a pinch of sugar. Remove the pheasant and keep warm on a plate. Boil down the roast stock, stir in the crème fraîche and season to taste.
Arrange lentil vegetables around the pheasant, garnish with parsley and thyme as desired. Add the sauce.