diff --git a/README.md b/README.md
index 4d5c1bb..45a8983 100644
--- a/README.md
+++ b/README.md
@@ -33,7 +33,7 @@
 
 </div>
 
-# Table of Contents  
+# Table of Contents
 
 - [📮 About](#-about)
 - [🕹 Project Motivation](#-project-motivation)
@@ -132,6 +132,7 @@ GUI clients are used to manage plugins, launch bot as well as specify credential
 | 🖼 Random Image         | Returns a random image url.                                                           | [@rakeshseal0](https://github.com/rakeshseal0)                                                           |
 | 🛢 URL Shortener        | Shortens a url                                                                        | [@rakeshseal0](https://github.com/rakeshseal0)                                                           |
 | 😁 emoji               | Returns emoji meaning                                                                 | [@deadex-ng](https://github.com/deadex-ng)                                                               |
+| :birthday: birthday    | Shows birthday match probability on a people group.                                   | [@paulosgf](https://github.com/paulosgf)                                                                 |
 
 ## ⚡ Quickstart
 
@@ -186,14 +187,15 @@ you should see the bot as hbot ... or as it's name is in [settings](https://gith
 
 ## Docker
 
-** Building Docker image **
+**Building Docker image**
+
 Change SERVER, PORT and NICKNAME variables to match your preferences
 
 ```
 docker build -t "honeybot/honeybot:6.0.2" .
 ```
 
-** Running Docker image **
+**Running Docker image**
 
 ```
 docker run -d --name=honeybot honeybot/honeybot:v6.0.2 honeybot run
diff --git a/src/honeybot/plugins/downloaded/birthparadox/__init__.py b/src/honeybot/plugins/downloaded/birthparadox/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/src/honeybot/plugins/downloaded/birthparadox/info.py b/src/honeybot/plugins/downloaded/birthparadox/info.py
new file mode 100644
index 0000000..22b19bb
--- /dev/null
+++ b/src/honeybot/plugins/downloaded/birthparadox/info.py
@@ -0,0 +1,16 @@
+NAME = "Birthday Paradox"
+
+ORIGINAL_AUTHORS = ["Paulo Ferraz"]
+
+ABOUT = """
+Show the probability that two or more people
+have the same birthday in the given group.
+"""
+
+COMMANDS = """
+>>> .birth
+returns help on plugin use
+
+>>> .birth <<number>>
+returns the birthday matches and probability in %.
+"""
diff --git a/src/honeybot/plugins/downloaded/birthparadox/main.py b/src/honeybot/plugins/downloaded/birthparadox/main.py
new file mode 100644
index 0000000..8d0ac77
--- /dev/null
+++ b/src/honeybot/plugins/downloaded/birthparadox/main.py
@@ -0,0 +1,118 @@
+"""
+[birthparadox.py]
+Bithday Paradox Plugin
+
+[Author]
+Paulo Ferraz
+
+[About]
+show the probability that two or more people
+have the same birthday in the given group.
+
+[Commands]
+>>> .birth <<number>>
+returns the birthday matches and probability in % of a group.
+"""
+import datetime
+import random
+
+
+class Plugin:
+    """
+    Show the high probability that two or more people
+    have the same birthday, even in a small group!
+    """
+
+    def __init__(self):
+        pass
+
+    """
+    AUXILIARY FUNCTIONS
+    """
+
+    def calc_probability(self, num):
+        """
+        Calculate the match probability in %
+        """
+        soma = 366
+        ano = 366
+        for i in range(num - 1):
+            soma *= ano - (i + 1)
+        perc = round((1 - (soma / 366**num)) * 100, 2)
+        return perc
+
+    def create_birthdays(self, num_people):
+        """
+        Simulate some birthdays in a group
+        """
+        start_date = datetime.date(1970, 1, 1)
+        birthday_group = []
+        while True:
+            birthday_group.clear()
+            for i in range(num_people):
+                birth = start_date + datetime.timedelta(random.randint(0, 366))
+                birthday_group.append(birth.strftime("%B, %d"))
+            if len(birthday_group) != len(set(birthday_group)):
+                break
+        return birthday_group
+
+    def find_match(self, birthday_group):
+        """
+        Try to to find a match in a group
+        """
+        matches = []
+        dates = ()
+        for i, first in enumerate(birthday_group):
+            for j, second in enumerate(birthday_group[i + 1 :]):
+                if first == second:
+                    matches.append(first)
+        dates = set(matches)
+        return dates
+
+    def help(self, methods, info):
+        """
+        Presentation and guidance function
+        """
+        title = "THE BIRTHDAY PARADOX"
+        statement = (
+            "It's the high probability that two or more people have the same birthday, even in a"
+            " small group!"
+        )
+        use = (
+            "Use: .birth <<number>>, where num is the size of the group of people to calculate"
+            " probability."
+        )
+        methods["send"](info["address"], title)
+        methods["send"](info["address"], statement)
+        methods["send"](info["address"], use)
+
+    def run(self, incoming, methods, info, bot_info):
+        """
+        Main function
+        """
+        try:
+            params = info["args"][1].split()
+            if len(params) <= 1:
+                if info["command"] == "PRIVMSG" and params[0] == ".birth":
+                    Plugin.help(self, methods, info)
+            if info["command"] == "PRIVMSG" and params[1]:
+                if params[1].isdecimal() and int(params[1]) >= 5:
+                    num = int(params[1])
+                    perc = Plugin.calc_probability(self, num)
+                    group = Plugin.create_birthdays(self, num)
+                    dates = "; ".join(Plugin.find_match(self, group))
+                    methods["send"](
+                        info["address"],
+                        "In this simulation, we found these [{}] matches, but on average, ".format(
+                            dates
+                        ),
+                    )
+                    methods["send"](
+                        info["address"],
+                        "this group has {} % of probability of having one or more people "
+                        "with the same birthday!".format(perc),
+                    )
+                else:
+                    methods["send"](info["address"], "Please, inform integer value >= 5 only!")
+        except Exception as e:
+            print("woops!! birthparadox plugin error ", e)