Animals

A wildlife crossing overpass with a red facade under construction in COlorado.

Colorado creates wildlife crossings fund

Residents will have the option to add $5 to their car registration to fund infrastructure that prevents wildlife-vehicle collisions.

May 29, 2026 - KKTV 11

A wildlife crossing in Arizona under construction.

Arizona emerges as national leader in wildlife crossings

Arizona has been building bridges to prevent wildlife-vehicle collisions at various hotspots throughout the state.

May 7, 2026 - Pew

Close-up of child's hands wearing black and white striped gloves holding a green frog.

Once a year, Maine roads become highways for amphibians

The 'Big Night' brings out volunteers to help frogs, salamanders, and other migrating amphibians cross roads to reach their breeding grounds.

May 5, 2026 - Grist

Close-up of razor wire at top of fence against blue sky.

San Diego Sues DHS, DOD Over Razor Wire Near Mexico Border

The city says U.S. Marines trespassed on city land to install fencing that damages sensitive habitat in an area designated as conservation land.

February 2, 2026 - CALmatters

Coyote walking down paved road in Los Angeles park.

The Year in Urban Wildlife

A roundup of stories about the creatures that share our cities.

December 27, 2023 - Bloomberg CityLab

Lake in city park with ducks in foreground and city skyline across the lake in the background.

The Resiliency of Urban Wildlife

A wide-ranging research study highlights the various qualities that make animal species living in urban environments thrive—and how biodiversity improves the health of our cities.

September 19, 2023 - Wired

Wildlife crossing bridge over roadway in Banff, Canada with snow-topped mountains in background

Wildlife Crossings as Key Infrastructure

Animal-vehicle collisions cause billions in property damage, hundreds of human deaths, and dramatic losses in animal populations every year. Monitoring migration and building for animals can make roads safer for everyone.

October 6, 2022 - Governing

Deer eating an orange on a Banff street

Returning to a Wilder World

The pandemic induced an accidental 'rewilding' in many places as animals took over cities and streets devoid of humans. As we emerge from our isolation, can we co-exist peacefully?

August 25, 2021 - High Country News

Chicken Run

Proposed Ordinance Would Limit Livestock Ownership in Chicago

In an effort to elevate a standard of care for livestock, an ordinance sponsored by Ald. Anthony Napolitano seeks to regulate fowl and livestock animal ownership within city limits.

April 22, 2020 - Chicago Tribune

Bird

Cities as ‘Powerhouses of Evolution’

A new book on urban ecology shows how quickly wild species living in cities can adapt to their surroundings.

May 12, 2018 - National Geographic

San Francisco Residential Neighborhoods

San Francisco's 'Green Connections Plan' Prioritizes Wildlife

An article and video by Chicago PBS station WTTW explore San Francisco's uniquely ambitious approach to sharing the city with wildlife.

March 29, 2017 - WTTW

Owl

How Built Environments Hyper-Activate Evolution

Welcome to a post-human era of biological evolution. Strap on your seat belts.

August 24, 2016 - The New York Times

Welcome to the 'Age of Animals as Infrastructure'

Animals are more than just guests or co-habitants in our cities, according to an article in New Scientist—they're a critical component of the infrastructure that keeps cities running.

May 6, 2015 - New Scientist

Landscape Architects Design Parks for Pets

Pet ownership in the U.S. continues to hit record levels, and with the increasing interest in city living the number (and variety of designs) of dog runs in city parks has increased. Designers are utilizing a dog's-eye-view to serve their clients.

August 30, 2012 - Metropolis Mag

Urban Noise Forces Birds to Change Their Tune

The amount of urban background noise is affecting the songs that birds sing to attract mates.

September 1, 2011 - Discovery

Goats Clearing Brush and Luring Crowds in L.A.

Goats being used to clear brush on a hillside in downtown Los Angeles are a cost-effective and environmentally-friendly way to deal with overgrowth -- and they're attracting fans.

August 12, 2011 - The New York Times

Post-Katrina Population Boom in New Orleans: Chickens

Stray chickens have overrun many parts of New Orleans since it was devastated by Hurricane Katrina in 2005.

April 14, 2011 - The New Orleans Times-Picayune

Animal Overpasses

Highways can be deadly for animals, especially when they cut directly through habitats. A recently completed design competition sought ideas for creating animal-safe bridges over highways.

December 16, 2010 - The Wall Street Journal

When California Mountain Lions Become City Dwellers

As urban sprawl continues to encroach on what was once expansive habitat for mountain lions, the large predators have been involved in more encounters with humans in urban settings.

November 29, 2010 - The San Francisco Chronicle

Urban Sprawl and Development Threatening Biodiversity in Animals

Habitat fragmentation linked with urban sprawl and development has been shown to negatively impact biological diversity in animals, according to new research.

September 27, 2010 - San Diego Union Tribune

FREE Course: Walkable City 1: Why Walkability?

After describing his path towards focusing on walkability as the essence of good planning, Jeff Speck marches through his five principal reasons for making more walkable places.

Reinventing Malls: Planning Alchemy—Turning Gray Fields Into Gold

The course focuses on the opportunities and imperatives that shape reinvention of mall sites.

Senior Planner

City of Thousand Oaks

Community Development Director

City of Wisconsin Rapids

Professor of Urban Planning

Harvard University Graduate School of Design

Top Books

An annual review of books related to planning.

Top Schools

The definitive ranking of graduate planning programs.

100 Most Influential Urbanists

The who's who of urbanism, according to Planetizen readers.

Urban Planning Creators You Should Know

A short list of voices on social, video, and podcasting platforms.