Data story

Understanding evolution: Beaks shaped by heat & time

Understanding evolution: Beaks shaped by heat & time

CONTEXT

Pre-thesis

ROLE

Data Designer

EXPERTISE

Data Vis.

YEAR

2020

about this project

This was my pre-thesis project at IIT Bombay. It shows the process of coming up with an interactive data story to improve the public understanding fo scientific concepts like the theory of evolution. Below, the process is outlined along with some snippets from the final outcome.

introduction

Overview

This interactive data story explains the concept of evolution through the lens of a 40-year field study conducted by Peter and Rosemary Grant on Daphne Major in the Galápagos. Over time, they observed changes in finch populations in response to shifts in climate, food sources, and competition. This project aims to translate their findings into a visual, intuitive experience for a general audience.

I created this as part of my pre-thesis project during my Master's in Interaction Design at IDC, IIT Bombay. It sits at the intersection of science communication, information design, and storytelling with data.

A brief overview of the project

A brief overview of the project

A snippet of the process from my project report.

A snippet of the process from my project report.

Process

Process & Craft

Understanding the domain
I began by diving into two books — The Beak of the Finch by Jonathan Weiner, and 40 Years of Evolution by the Grants themselves. These not only provided content but also helped frame the narrative tone and key moments.

Framing the story
I broke the story into a sequence that would feel natural to someone encountering these ideas for the first time. Using ideas from Scott McCloud’s storytelling through visuals, I shaped a flow that moved from geography and isolation to adaptation and selection.

Working with data
I used real-world data made available by the Grants through Dryad.org. With help from research like Tamara Munzner’s Visualization Analysis and Design and insights from the Reflections on how designers design with data paper, I explored different ways of presenting patterns over time without overwhelming the viewer.

Designing the experience
I kept the visual style simple and quiet, letting the story do the talking. Visual elements followed principles from Beautiful Evidence and Visual Grammar, while the pacing and interactivity took cues from projects like The Room of Change and Preservation of Favored Traces. I wanted each screen to feel like a page in a book you can move through at your own pace.

Prototyping and feedback
I shared early versions with classmates, science enthusiasts, and teachers. Their feedback helped simplify the language, fix navigation friction, and fine-tune the visuals. Some suggestions even changed how I approached the ending.

some examples of redesigned visualisations

A visualisation from the book showing correlation between three data data points (left), the new visualisation showing the interdependence of multiple events and presenting it as a journey (right).

A visualisation from the book showing correlation between three data data points (left), the new visualisation showing the interdependence of multiple events and presenting it as a journey (right).

A visual from the book showing variation in beak size (left), a rearrangement and highlighting of birds to show within-class and inter-class variation in beak size. (right)

A visual from the book showing variation in beak size (left), a rearrangement and highlighting of birds to show within-class and inter-class variation in beak size. (right)

My approach to the narrative while building the data story. The curved line shows 'Pathos' , the introduction of conflict and its resolution.

My approach to the narrative while building the data story. The curved line shows 'Pathos' , the introduction of conflict and its resolution.

final outcome

The final piece is an interactive web-page that walks users through how evolution unfolds — not as a fixed theory, but as a living process you can trace. It combines narrative, data, and visual storytelling to make ideas like competition, adaptation, and species change feel more tangible.

There’s a lot more detail on the data, research, and design thinking behind this project in the full report I’ve linked above.

snippets from the web page

Frame (top right), shows how the island was isolated from the larger land mass over time.

Frame (top right), shows how the island was isolated from the larger land mass over time.

The two frames above talk about beak size, and the branching of one species into two.

The two frames above talk about beak size, and the branching of one species into two.

The four frames above show a snippet of the visual aesthetic of the data story.

The four frames above show a snippet of the visual aesthetic of the data story.

References

  • Jonathan Weiner. The Beak of the Finch

  • Peter & Rosemary Grant. 40 Years of Evolution

  • Scott Berinato. Visualizations That Really Work (Harvard Business Review)

  • Tamara Munzner. Visualization Analysis and Design

  • Alberto Cairo. How Charts Lie

  • Maire-Laure Ryan. Avatars of Story

  • Edward Tufte. Beautiful Evidence

  • Christian Leborg. Visual Grammar

  • Giorgia Lupi. The Room of Change

  • Fathom Studio. Preservation of Favored Traces

  • Bigelow, Druckery, Fishery, Meyer. Reflections on how designers design with data

© 2025 Nishita Nirmal. All rights reserved. 

Bangalore, India

nishita.mdlr@gmail.com

© 2025 Nishita Nirmal. All rights reserved. 

Bangalore, India

nishita.mdlr@gmail.com

© 2025 Nishita Nirmal. All rights reserved. 

Bangalore, India

nishita.mdlr@gmail.com

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