Are there as many rats as people in New York City?

rat

Urban legend states that New York City has as many rats as people: roughly 8 million; but a new analysis suggests there are nowhere near as many.

The analysis classified rat sightings by city lot, of which there are roughly 842,000 in New York City. The researchers estimated 40,500 rat-inhabited lots in the city. By liberally assuming that 40 to 50 belong to a typical colony and that one full colony occupies each rat-inhabited lot, the researchers concluded that 2 million would be an extremely generous estimate of the city's rat population.

"While the rat population remains a serious problem in New York City, there appears to be no evidence supporting the 8 million number. In problems like this, the city's open data is invaluable for challenging rumors, evaluating community need and establishing government efficacy," said Jonathan Auerbach, author of the Significance study winner of the YSS/Significance Young Statisticians Writing Competition.


Explore further

Rodents winning NY rat race, but humans fight back

More information: Auerbach, J. (2014), Does New York City really have as many rats as people?. Significance, 11: 22–27. DOI: 10.1111/j.1740-9713.2014.00764.x
Journal information: Significance

Provided by Wiley
Citation: Are there as many rats as people in New York City? (2014, November 4) retrieved 20 October 2019 from https://phys.org/news/2014-11-rats-people-york-city.html
This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.
0 shares

Feedback to editors

User comments

Nov 05, 2014
Got Allergies / Allergic Asthma ?

Yes ..
Mice / Rat Feces etc are one of Allergies TroubleMakers …

But while the above Allergy Sources DO contribute to Allergy / Allergic ASTHMA Attacks ..

It is the Combination of Seasonal & Year-round Aero-Enviro Sources which all add up to Achoo ..

And Asthma ATTACK with Allergic Asthma.

So…

Because Allergy is a Mis-Wired Immune System…

A Successful Option is to expose your Immune system to small traces of your Allergy Sources ..

Such that, You slowly leverage the natural adaptive power of the Immune System to Higher Levels of Internal tolerance ..

Such that Your Symptoms are Pushed into Remission ..

This is Especially Important for Allergic ASTHMA Sufferers…

Because 85% of Asthma = Allergic ASTHMA

Such that Allergic Asthma Attacks = Aero-Enviro Allergy Triggers.

Build Tolerance to Your Aero-Enviro Allergy / Asthma Triggers ..

GOOy CHEWy RELIEF

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more