diff --git a/Document/Chapters/01-Introduction.tex b/Document/Chapters/01-Introduction.tex
index 693764e..0f2b202 100644
--- a/Document/Chapters/01-Introduction.tex
+++ b/Document/Chapters/01-Introduction.tex
@@ -2,7 +2,7 @@ \chapter{Introduction}
 \label{cp:introduction}
 The University of Moratuwa is situated in close proximity to the Bolgoda Environmental Protection Area (EPA). Additionally, within the university grounds lies a natural terrestrial ecosystem commonly referred to as 'Kaju Kele.' This unique setting has established the University of Moratuwa as one of the urban universities in Sri Lanka with the highest diversity of bird species.
 \\\\
-The last study conducted on the bird diversity at the University of Moratuwa dates back almost 20 years, utilizing data collected from August 2003 to March 2005[1]. The present paper is based on more recent data, spanning from October 2021 to March 2024, collected by the two authors.
+The last study conducted on the bird diversity at the University of Moratuwa dates back almost 20 years, utilizing data collected from August 2003 to March 2005[1]. The present paper is based on more recent data, spanning from October 2021 to April 2024, collected by the two authors.
 \\\\
 The first volume of this series focuses on bird diversity, and upcoming volumes may explore other classes of flora \& fauna.
 \begin{figure}[!htpb]
diff --git a/Document/Chapters/02-Overview.tex b/Document/Chapters/02-Overview.tex
index c338a1c..0f4cfde 100644
--- a/Document/Chapters/02-Overview.tex
+++ b/Document/Chapters/02-Overview.tex
@@ -1,7 +1,7 @@
 \chapter{Overview}
 \label{cp:overview}
 \section{Data Collection Methodology}
-As mentioned above the data collection for this study occurred from October 2021 to March 2024. The process included random observations carried out consistently during this period, and certain nocturnal bird species were identified based on their distinctive calls. Starting from January 2024, a roundup of special observations was conducted, encompassing the entire university to ensure comprehensive documentation of all bird species.
+As mentioned above the data collection for this study occurred from October 2021 to April 2024. The process included random observations carried out consistently during this period, and certain nocturnal bird species were identified based on their distinctive calls. Starting from January 2024, a roundup of special observations was conducted, encompassing the entire university to ensure comprehensive documentation of all bird species.
 \\\\
 To create the final comprehensive checklist of bird species, the data collected by both authors was merged.
 
diff --git a/Document/Chapters/03-Diversity.tex b/Document/Chapters/03-Diversity.tex
index 1a5c008..9946678 100644
--- a/Document/Chapters/03-Diversity.tex
+++ b/Document/Chapters/03-Diversity.tex
@@ -2,8 +2,8 @@ \chapter{Diversity}
 \label{cp:Diversity}
 
 \section{Species Richness}
-A total of 84 bird species were recorded during the period of study. This includes birds from 41 different families.\\
-Out of 493 total bird species found in Sri Lanka, this is roughly 17.04\%.
+A total of 85 bird species were recorded during the period of study. This includes birds from 41 different families.\\
+Out of 493 total bird species found in Sri Lanka, this is roughly 17.24\%.
 
 \begin{figure}[!htpb]
     \centering
@@ -11,7 +11,7 @@ \section{Species Richness}
     \caption[]{Pie chart showing the recorded number of bird species in the university out of the birds recorded in Sri Lanka.}
     \label{fig:figure-01}
 \end{figure}
-\noindent 12 out of 84 bird species are migrants to the island while the other 72 species are breeding residents. 
+\noindent 12 out of 85 bird species are migrants to the island while the other 73 species are breeding residents. 
 
 \begin{figure}[!htpb]
     \centering
@@ -92,6 +92,7 @@ \section{Rarity of Species}
     \item Indian Golden Oriole (\textit{Oriolus kundoo})
     \item Indian Robin (\textit{Saxicoloides fulicatus})
     \item Painted Stork (\textit{Mycteria leucocephala})
+    \item Black Bittern (\textit{Ixobrychus flavicollis})
 \end{itemize}
 falls under this category.
 \begin{figure}[!htpb]
diff --git a/Document/Chapters/05-Checklist.tex b/Document/Chapters/05-Checklist.tex
index 57f1811..7dbd2f3 100644
--- a/Document/Chapters/05-Checklist.tex
+++ b/Document/Chapters/05-Checklist.tex
@@ -305,7 +305,7 @@ \chapter{Checklist}
 \item[]%
 \textit{Ardea cinerea (LC)}%
 \item[]%
-\textbf{Grey Heron}%
+\textbf{Gray Heron}%
 \end{description}%
 \begin{description}%
 \item[H: ]%
@@ -378,19 +378,18 @@ \chapter{Checklist}
 \item%
 \begin{description}%
 \item[]%
-\textit{Ardea alba (LC)}%
+\textit{Ixobrychus flavicollis (LC)}%
 \item[]%
-\textbf{Great Egret}%
+\textbf{Black Bittern}%
 \end{description}%
 \begin{description}%
 \item[H: ]%
-Fairly common breeding resident in lowlands, occasionally seen on hills. Margins of lagoons,tanks paddy-fields and marshes are the preferred habitat{[}2{]}.%
+Fairly rare breeding resident in lowlands. A winter migrant to lowlands and less so up to mid hills. Favours reedbeds, marshes and waterside vegetation with dense tangles{[}2{]}.%
 \item[D: ]%
-Its diet primarily consists of mollusks, amphibians, aquatic insects, small reptiles, crustaceans, and occasionally other small animals. However, fish constitute the main portion of its diet.%
+Black Bitterns primarily consume a variety of small animals, with a focus on fish and amphibians.%
 \item[R: ]%
-Boat yard and the surrounding areas of Bolgoda lake.%
+Recorded only once and was in the boat yard.%
 \end{description}%
-\end{enumerate}%
 \vspace*{\fill} % Fill the space above the content to push it to the bottom
 \begin{figure}[!htpb]
     \centering
@@ -398,7 +397,23 @@ \chapter{Checklist}
     \caption[]{Yellow Bittern, one of the most elusive birds to see in the university premises.}
     \label{fig:figure-01}
 \end{figure}
-\vfill % Fill any remaining space at the bottom
+\newpage
+\item%
+\begin{description}%
+\item[]%
+\textit{Ardea alba (LC)}%
+\item[]%
+\textbf{Great Egret}%
+\end{description}%
+\begin{description}%
+\item[H: ]%
+Fairly common breeding resident in lowlands, occasionally seen on hills. Margins of lagoons,tanks paddy-fields and marshes are the preferred habitat{[}2{]}.%
+\item[D: ]%
+Its diet primarily consists of mollusks, amphibians, aquatic insects, small reptiles, crustaceans, and occasionally other small animals. However, fish constitute the main portion of its diet.%
+\item[R: ]%
+Boat yard and the surrounding areas of Bolgoda lake.%
+\end{description}%
+\end{enumerate}%
 \item%
 Campephagidae%
 \begin{enumerate}%
@@ -781,7 +796,6 @@ \chapter{Checklist}
 Boat yard and the surrounding areas of Bolgoda lake.
 \end{description}%
 \end{enumerate}%
-\newpage
 \begin{figure}[!htpb]
     \centering
     \includegraphics[width=\linewidth]{Figures/scenery.JPG}
@@ -807,6 +821,7 @@ \chapter{Checklist}
 Observed in an exact single location located inside the Kaju kele multiple times.%
 \end{description}%
 \end{enumerate}%
+\newpage
 \item%
 Laridae%
 \begin{enumerate}%
@@ -1015,7 +1030,6 @@ \chapter{Checklist}
 \item[R: ]%
 Observed around the Jack trees located near the library%
 \end{description}%
-\newpage
 \item%
 \begin{description}%
 \item[]%
@@ -1183,6 +1197,7 @@ \chapter{Checklist}
 Boat yard and the surrounding areas of Bolgoda lake.%
 \end{description}%
 \end{enumerate}%
+\newpage
 \item%
 Picidae%
 \begin{enumerate}%
@@ -1202,7 +1217,6 @@ \chapter{Checklist}
 Kaju kele,Boat yard, wooded areas around the steel building, and Lagaan.%
 \end{description}%
 \end{enumerate}%
-\newpage
 \item%
 Psittacidae%
 \begin{enumerate}%
@@ -1335,7 +1349,6 @@ \chapter{Checklist}
 boat yard and the surrounding areas of Bolgoda lake.%
 \end{description}%
 \end{enumerate}%
-\newpage
 \item%
 Recurvirostridae%
 \begin{enumerate}%
diff --git a/LatexCode.tex b/LatexCode.tex
index 41002df..fb6b3d1 100644
--- a/LatexCode.tex
+++ b/LatexCode.tex
@@ -390,6 +390,21 @@
 \item[R: ]%
 boat yard and the surrounding areas of Bolgoda lake.%
 \end{description}%
+\item%
+\begin{description}%
+\item[]%
+\textit{Ixobrychus flavicollis (LC)}%
+\item[]%
+\textbf{Black Bittern}%
+\end{description}%
+\begin{description}%
+\item[H: ]%
+Fairly rare breeding resident in lowlands. A winter migrant to lowlands and less so up to mid hills. Favours reedbeds,marshes and waterside vegetation with dense tangles{[}2{]}.%
+\item[D: ]%
+Black Bitterns primarily consume a variety of small animals, with a focus on fish and amphibians.%
+\item[R: ]%
+Recorded only once and was in the boat yard.%
+\end{description}%
 \end{enumerate}%
 \item%
 Campephagidae%
@@ -1333,7 +1348,7 @@
 \item[D: ]%
 Uses the sharp bills to peck and ingest only very small food such as molluscs, miniscule crustaceans, algae, flies and aquatic insects.%
 \item[R: ]%
-Observed at Boat yard only once as a flock in flight.%
+Observed at boat yard only once as a flock in flight.%
 \end{description}%
 \end{enumerate}%
 \item%
diff --git a/old_vs_new_records.xlsx b/old_vs_new_records.xlsx
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diff --git a/uomBirds.xlsx b/uomBirds.xlsx
index 066eaaf..962a3b8 100644
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