Hello, Penguins!

Introduction

Meet the Palmer Penguins!!

Packages

For this analysis we’ll use a few packages for visualization and data display.

Code

import pandas as pd
import seaborn as sns 
from IPython.display import Markdown

sns.set_style('whitegrid')

Data

The dataset we’ll use comes from the palmerpenguins package.

Code

from palmerpenguins import load_penguins

penguins = load_penguins()

This dataset contains size measurements, clutch observations, and blood isotope ratios for 344 adult foraging Adélie, Chinstrap, and Gentoo penguins observed on islands in the Palmer Archipelago near Palmer Station, Antarctica.(Gorman, Williams, and Fraser 2014)

Three species of penguins

Let’s take a peek at the data. Table 1 shows the first five rows of the penguins data frame.

Code

Markdown(penguins.head().to_markdown(index=False))

Table 1: First five rows of the penguins data frame.

species	island	bill_length_mm	bill_depth_mm	flipper_length_mm	body_mass_g	sex	year
Adelie	Torgersen	39.1	18.7	181	3750	male	2007
Adelie	Torgersen	39.5	17.4	186	3800	female	2007
Adelie	Torgersen	40.3	18	195	3250	female	2007
Adelie	Torgersen	nan	nan	nan	nan	nan	2007
Adelie	Torgersen	36.7	19.3	193	3450	female	2007

Exploratory analysis

Body mass vs. flipper length

Figure 1 shows the relationship between body mass and flipper length of penguins.

Code

# from https://github.com/mcnakhaee/palmerpenguins
g = sns.lmplot(x="flipper_length_mm",
               y="body_mass_g",
               hue="species",
               height=7,
               data=penguins,
               palette=['#FF8C00','#159090','#A034F0'])
g.set_xlabels('Flipper Length (mm)')
g.set_ylabels('Body Mass (g)')

Figure 1: Body mass vs. flipper length of penguins

References

Gorman, Kristen B, Tony D Williams, and William R Fraser. 2014. “Ecological Sexual Dimorphism and Environmental Variability Within a Community of Antarctic Penguins (Genus Pygoscelis).” PloS One 9 (3): e90081.