diff --git a/Animals/animal.py b/Animals/animal.py
index 5755d59..598e5e9 100644
--- a/Animals/animal.py
+++ b/Animals/animal.py
@@ -1,5 +1,4 @@
 import random
-
 import pygame
 from abc import abstractmethod
 
diff --git a/Animals/animals.py b/Animals/animals.py
index 44313a1..1a037e6 100644
--- a/Animals/animals.py
+++ b/Animals/animals.py
@@ -3,6 +3,8 @@ from giraffe import Giraffe
 from penguin import Penguin
 from parrot import Parrot
 from bear import Bear
+from owl import Owl
+from bat import Bat
 
 def create_animals():
     giraffe1 = Giraffe(0, 0, adult=True)
@@ -26,30 +28,37 @@ def create_animals():
     elephant5 = Elephant(0, 0)
     parrot1 = Parrot(0, 0)
     parrot2 = Parrot(0, 0)
-    parrot3 = Parrot(0, 0)
-    parrot4 = Parrot(0, 0)
-    parrot5 = Parrot(0, 0)
+    owl1 = Owl(0, 0)
+    owl2 = Owl(0, 0)
+    bat1 = Bat(0, 0)
+    bat2 = Bat(0, 0)
 
     Animals =  [giraffe1, giraffe2, giraffe3, giraffe4, giraffe5,
                 bear1, bear2, bear3, bear4, bear5,
                 elephant1, elephant2, elephant3, elephant4, elephant5,
                 penguin1, penguin2, penguin3, penguin4,
-                parrot1, parrot2, parrot3, parrot4, parrot5]
+                parrot1, parrot2, owl1, owl2, bat1, bat2]
 
     return Animals
 
 def draw_Animals(Animals, const):
     for Animal in Animals:
+
         Animal.draw(const.screen, const.GRID_SIZE)
-        if Animal.getting_hungry() == 5:
+
+        if Animal.getting_hungry(const) == 5:
            Animal.draw_exclamation(const.screen, const.GRID_SIZE, Animal.x, Animal.y)
            Animal.draw_food(const.screen,const.GRID_SIZE,Animal.x,Animal.y,'images/empty_bowl.png')
-        if Animal.getting_hungry() >= 4 and Animal.getting_hungry() < 5:
+
+        if Animal.getting_hungry(const) >= 4 and Animal.getting_hungry(const) < 5:
            Animal.draw_exclamation(const.screen, const.GRID_SIZE, Animal.x, Animal.y)
            Animal.draw_food(const.screen,const.GRID_SIZE,Animal.x,Animal.y,'images/almost_empty.png')
-        if Animal.getting_hungry() >= 2 and Animal.getting_hungry() < 4:
+
+        if Animal.getting_hungry(const) >= 2 and Animal.getting_hungry(const) < 4:
            Animal.draw_food(const.screen,const.GRID_SIZE,Animal.x,Animal.y,'images/half_bowl.png')
-        if Animal.getting_hungry() < 2:
+
+        if Animal.getting_hungry(const) < 2:
             Animal.draw_food(const.screen,const.GRID_SIZE,Animal.x,Animal.y,'images/full_bowl.png')
+
         if Animal.ill:
             Animal.draw_illness(const.screen, const.GRID_SIZE, Animal.x, Animal.y)
\ No newline at end of file
diff --git a/Animals/bat.py b/Animals/bat.py
new file mode 100644
index 0000000..50e4740
--- /dev/null
+++ b/Animals/bat.py
@@ -0,0 +1,25 @@
+from animal import Animal
+import pygame
+from datetime import datetime
+
+class Bat(Animal):
+    def __init__(self, x, y, adult=False):
+        Bat_image = pygame.image.load('images/bat.png')
+        name = 'bat'
+        environment = "medium"
+        food_image = 'images/grains.png'
+        parrot_food = 'grains'
+        super().__init__(x, y,name, Bat_image, food_image,parrot_food, environment, adult)
+        self._starttime = datetime.now()
+
+    def getting_hungry(self, const):
+        checktime = datetime.now()
+        delta = checktime - self._starttime
+        minutes_passed = delta.total_seconds() / 30
+        self._starttime = checktime
+
+        if const.IS_NIGHT and self._feed < 5:
+            self._feed += minutes_passed
+            self._feed = min(self._feed, 5)
+
+        return self._feed
\ No newline at end of file
diff --git a/Animals/bear.py b/Animals/bear.py
index eaf25c4..f73774b 100644
--- a/Animals/bear.py
+++ b/Animals/bear.py
@@ -14,15 +14,14 @@ class Bear(Animal):
         super().__init__(x, y,name, Bear_image, food_image,bear_food,environment, activity, ill, adult)
         self._starttime = datetime.now()
 
-         
+    def getting_hungry(self, const):
         
-
-    def getting_hungry(self):
         checktime = datetime.now()
         delta = checktime - self._starttime
         minutes_passed = delta.total_seconds() / 60
-        self._feed += minutes_passed
         self._starttime = checktime
-        if self._feed > 5:
-            self._feed = 5
+
+        if const.IS_NIGHT and self._feed < 5 and const.season != "winter":
+            self._feed += minutes_passed
+            self._feed = min(self._feed, 5)
         return self._feed
\ No newline at end of file
diff --git a/Animals/elephant.py b/Animals/elephant.py
index b43ff98..b0f019d 100644
--- a/Animals/elephant.py
+++ b/Animals/elephant.py
@@ -2,8 +2,6 @@ from animal import Animal
 import pygame
 from datetime import datetime
 
-
-
 class Elephant(Animal):
     def __init__(self, x, y, adult=False):
         Elephant_image = pygame.image.load('images/elephant.png')
@@ -20,15 +18,14 @@ class Elephant(Animal):
         
         super().__init__(x, y,name, Elephant_image, food_image,elephant_food, environment, activity, ill, adult)
         self._starttime = datetime.now()
-
-         
-
-    def getting_hungry(self):
+ 
+    def getting_hungry(self, const):
         checktime = datetime.now()
         delta = checktime - self._starttime
         minutes_passed = delta.total_seconds() / 50
-        self._feed += minutes_passed
         self._starttime = checktime
-        if self._feed > 5:
-            self._feed = 5
+
+        if not const.IS_NIGHT and self._feed < 5:
+            self._feed += minutes_passed
+            self._feed = min(self._feed, 5)
         return self._feed
\ No newline at end of file
diff --git a/Animals/giraffe.py b/Animals/giraffe.py
index d04cbd3..b628ff7 100644
--- a/Animals/giraffe.py
+++ b/Animals/giraffe.py
@@ -2,8 +2,6 @@ from animal import Animal
 import pygame
 from datetime import datetime
 
-
-
 class Giraffe(Animal):
     def __init__(self, x, y, adult=False):
         Giraffe_image = pygame.image.load('images/giraffe.png')
@@ -16,14 +14,13 @@ class Giraffe(Animal):
         super().__init__(x, y, name, Giraffe_image, food_image,giraffe_food, environment, activity, ill, adult)
         self._starttime = datetime.now()
 
-        
-
-    def getting_hungry(self):
+    def getting_hungry(self, const):
         checktime = datetime.now()
         delta = checktime - self._starttime
         minutes_passed = delta.total_seconds() / 30
-        self._feed += minutes_passed
         self._starttime = checktime
-        if self._feed > 5:
-            self._feed = 5
+
+        if not const.IS_NIGHT and self._feed < 5:
+            self._feed += minutes_passed
+            self._feed = min(self._feed, 5)
         return self._feed
\ No newline at end of file
diff --git a/Animals/owl.py b/Animals/owl.py
new file mode 100644
index 0000000..eba0f84
--- /dev/null
+++ b/Animals/owl.py
@@ -0,0 +1,25 @@
+from animal import Animal
+import pygame
+from datetime import datetime
+
+class Owl(Animal):
+    def __init__(self, x, y, adult=False):
+        Owl_image = pygame.image.load('images/owl.png')
+        name = 'owl'
+        environment = "medium"
+        food_image = 'images/grains.png'
+        parrot_food = 'grains'
+        super().__init__(x, y,name, Owl_image, food_image,parrot_food, environment, adult)
+        self._starttime = datetime.now()
+
+    def getting_hungry(self, const):
+        checktime = datetime.now()
+        delta = checktime - self._starttime
+        minutes_passed = delta.total_seconds() / 25
+        self._starttime = checktime
+
+        if const.IS_NIGHT and self._feed < 5:
+            self._feed += minutes_passed
+            self._feed = min(self._feed, 5)
+
+        return self._feed
\ No newline at end of file
diff --git a/Animals/parrot.py b/Animals/parrot.py
index fd58522..5353485 100644
--- a/Animals/parrot.py
+++ b/Animals/parrot.py
@@ -2,8 +2,6 @@ from animal import Animal
 import pygame
 from datetime import datetime
 
-
-
 class Parrot(Animal):
     def __init__(self, x, y, adult=False):
         Parrot_image = pygame.image.load('images/parrot.png')
@@ -16,14 +14,13 @@ class Parrot(Animal):
         super().__init__(x, y, name, Parrot_image, food_image, parrot_food, environment, activity, ill, adult)
         self._starttime = datetime.now()
 
-         
-
-    def getting_hungry(self):
+    def getting_hungry(self, const):
         checktime = datetime.now()
         delta = checktime - self._starttime
         minutes_passed = delta.total_seconds() / 20
-        self._feed += minutes_passed
         self._starttime = checktime
-        if self._feed > 5:
-            self._feed = 5
+
+        if not const.IS_NIGHT and self._feed < 5:
+            self._feed += minutes_passed
+            self._feed = min(self._feed, 5)
         return self._feed
\ No newline at end of file
diff --git a/Animals/penguin.py b/Animals/penguin.py
index 368574c..fac47e4 100644
--- a/Animals/penguin.py
+++ b/Animals/penguin.py
@@ -2,8 +2,6 @@ from animal import Animal
 import pygame
 from datetime import datetime
 
-
-
 class Penguin(Animal):
     def __init__(self, x, y, adult=False):
         Penguin_image = pygame.image.load('images/penguin.png')
@@ -16,14 +14,13 @@ class Penguin(Animal):
         super().__init__(x, y, name, Penguin_image, food_image, penguin_food, environment, activity, ill, adult)
         self._starttime = datetime.now()
 
-        
-
-    def getting_hungry(self):
+    def getting_hungry(self, const):
         checktime = datetime.now()
         delta = checktime - self._starttime
         minutes_passed = delta.total_seconds() / 15
-        self._feed += minutes_passed
         self._starttime = checktime
-        if self._feed > 5:
-            self._feed = 5
+
+        if not const.IS_NIGHT and self._feed < 5:
+            self._feed += minutes_passed
+            self._feed = min(self._feed, 5)
         return self._feed
\ No newline at end of file
diff --git a/agent.py b/agent.py
index 6c2e638..27783c2 100644
--- a/agent.py
+++ b/agent.py
@@ -1,5 +1,7 @@
 import pygame
+from constants import Constants
 from state_space_search import is_border, is_obstacle
+from night import draw_night
 
 class Agent:
     def __init__(self, istate, image_path, grid_size):
@@ -10,7 +12,7 @@ class Agent:
         self.image = pygame.transform.scale(self.image, (grid_size, grid_size))
         self._food = 0
         
-    def draw(self, screen, grid_size):
+    def draw(self, const):
         # Obróć obrazek zgodnie z kierunkiem
         if self.direction == 'E':
             self.image= pygame.image.load('images/agent4.png')
@@ -20,8 +22,10 @@ class Agent:
             self.image= pygame.image.load('images/agent3.png')
         else:  # direction == 'N'
             self.image= pygame.image.load('images/agent2.png')
-        self.image = pygame.transform.scale(self.image, (grid_size, grid_size))
-        screen.blit(self.image, (self.x * self.grid_size, self.y * self.grid_size))
+        self.image = pygame.transform.scale(self.image, (const.GRID_SIZE, const.GRID_SIZE))
+        const.screen.blit(self.image, (self.x * self.grid_size, self.y * self.grid_size))
+
+        if const.IS_NIGHT: draw_night(const)
 
     def handle_event(self, event, max_x, max_y, animals, obstacles):
         if event.type == pygame.KEYDOWN:
@@ -63,7 +67,7 @@ def feed_animal(self, animals, goal):
     if self.x == goal_x and self.y == goal_y:
         for animal in animals:
             if animal.x == goal_x and animal.y == goal_y:
-                if animal.getting_hungry() < self._food :
+                if animal.getting_hungry(const=Constants()) < self._food :
                     self._food -= animal._feed
                     animal._feed = 0
                     print(animal.name, "fed with", animal.food)
diff --git a/constants.py b/constants.py
index 2796685..074f227 100644
--- a/constants.py
+++ b/constants.py
@@ -1,4 +1,6 @@
+import random
 import pygame
+import time
 
 class Constants:
     def __init__(self):
@@ -10,6 +12,11 @@ class Constants:
         self.WINDOW_SIZE = (self.GRID_WIDTH * self.GRID_SIZE, self.GRID_HEIGHT * self.GRID_SIZE)
         self.background_image = pygame.transform.scale(pygame.image.load('images/tło.jpg'), self.WINDOW_SIZE)
 
+        self.IS_NIGHT = False
+        self.TIME_CHANGE = time.time() + 60
+
+        self.season = random.choice(["spring", "summer", "autumn", "winter"])
+
 def init_pygame(const):
     pygame.init()
     const.screen = pygame.display.set_mode(const.WINDOW_SIZE)
\ No newline at end of file
diff --git a/draw.py b/draw.py
index e893031..df5df3e 100644
--- a/draw.py
+++ b/draw.py
@@ -19,4 +19,4 @@ def draw_house(const):
     image_path = 'images/house.png'
     image_surface = pygame.image.load(image_path)  # Wczytanie obrazka do obiektu Surface
     scaled_image = pygame.transform.scale(image_surface, (const.GRID_SIZE * 2, const.GRID_SIZE * 2))
-    const.screen.blit(scaled_image, (X * const.GRID_SIZE, Y * const.GRID_SIZE))
+    const.screen.blit(scaled_image, (X * const.GRID_SIZE, Y * const.GRID_SIZE))
\ No newline at end of file
diff --git a/enclosure.py b/enclosure.py
index 723e243..06a27c7 100644
--- a/enclosure.py
+++ b/enclosure.py
@@ -1,6 +1,5 @@
 import pygame
 
-
 class Enclosure:
     def __init__(self, x1, y1, x2, y2, gate1, gate2, type, imageH, imageV, imageGate):
         self.x1 = x1 - 1
diff --git a/images/bat.png b/images/bat.png
new file mode 100644
index 0000000..3065123
Binary files /dev/null and b/images/bat.png differ
diff --git a/images/owl.png b/images/owl.png
new file mode 100644
index 0000000..8824fc8
Binary files /dev/null and b/images/owl.png differ
diff --git a/main.py b/main.py
index 1eff217..2747872 100644
--- a/main.py
+++ b/main.py
@@ -1,6 +1,7 @@
 import random
 import pygame
 import sys
+
 sys.path.append('./Animals')
 
 from animals import create_animals, draw_Animals
@@ -11,7 +12,8 @@ from state_space_search import graphsearch, generate_cost_map
 from terrain_obstacle import create_obstacles, draw_Terrain_Obstacles
 from constants import Constants, init_pygame
 from draw import draw_goal, draw_grid, draw_house
-from season import draw_background, draw_season
+from season import draw_background
+from night import change_time
 
 const = Constants()
 init_pygame(const)
@@ -76,7 +78,7 @@ def main():
     actions = []
     clock = pygame.time.Clock()
     spawned = False
-    season = draw_season()
+
     while True:
         for event in pygame.event.get():
             if event.type == pygame.QUIT:
@@ -84,7 +86,8 @@ def main():
                 sys.exit()
             agent.handle_event(event, const.GRID_WIDTH, const.GRID_HEIGHT, Animals, obstacles)
 
-        draw_background(const, season)
+        change_time(const)
+        draw_background(const)
         draw_grid(const)
         draw_enclosures(Enclosures, const)
         draw_gates(Enclosures, const)
@@ -96,12 +99,12 @@ def main():
             spawn_obstacles()
             cost_map = generate_cost_map(Animals, Terrain_Obstacles)
             for animal in Animals:
-                animal._feed = 3  
+                animal._feed = 0
             spawned = True
             
         draw_Animals(Animals, const)
         draw_Terrain_Obstacles(Terrain_Obstacles, const)
-        agent.draw(const.screen, const.GRID_SIZE)
+        agent.draw(const)
         pygame.display.flip()
         clock.tick(10)
 
diff --git a/night.py b/night.py
new file mode 100644
index 0000000..0de3c04
--- /dev/null
+++ b/night.py
@@ -0,0 +1,17 @@
+import time
+import pygame
+
+def draw_night(const):
+    overlay = pygame.Surface(const.WINDOW_SIZE)
+    overlay.fill((0, 0, 0))
+    overlay.set_alpha(128)  # Ustawienie przezroczystości (0 - całkowicie przeźroczyste, 255 - nieprzeźroczyste)
+    const.screen.blit(overlay, (0, 0))
+
+def change_time(const):
+    current_time = time.time()
+
+    # Sprawdzamy, czy nadszedł czas zmiany pory dnia
+    if current_time >= const.TIME_CHANGE:
+        # Zmieniamy porę dnia
+        const.IS_NIGHT = not const.IS_NIGHT  # Jeśli było dzień, teraz będzie noc, i odwrotnie
+        const.TIME_CHANGE = current_time + 60  # Ustawiamy czas na kolejną zmianę za 1 minutę
\ No newline at end of file
diff --git a/season.py b/season.py
index 1e4a44a..4268ef7 100644
--- a/season.py
+++ b/season.py
@@ -1,16 +1,11 @@
 import pygame
-import random
-def draw_season():
-       seasons = ["spring", "summer", "autumn", "winter"]
-       return random.choice(seasons)
 
-def draw_background(const, season):
+def draw_background(const):
         season_images = {
         "spring": "images/tłowiosna.jpg",
         "summer": "images/tło.jpg",
         "autumn": "images/tłojesień.jpg",
         "winter": "images/tłozima.jpg"
     }
-        background_image = pygame.transform.scale(pygame.image.load(season_images[season]), const.WINDOW_SIZE)
-        const.screen.blit(background_image, (0, 0))
-
+        background_image = pygame.transform.scale(pygame.image.load(season_images[const.season]), const.WINDOW_SIZE)
+        const.screen.blit(background_image, (0, 0))
\ No newline at end of file