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Flooding underneath La Cholla bridge at the Cañada Del Oro Wash in Tucson.

Rillito Anti-Flood Measures Troubling for Some Tucsonans

The project aims to mitigate future flooding but strips riverbed vegetation to do so.
As of 2005, scientists say there were 29 surviving populations of the New Mexico meadow jumping mouse in the Southwest, but biologists say they believe there may be fewer now.

Team 'Inks' Endangered Mouse in Arizona, New Mexico

NAU researchers confirm species' range in region using special inkpads.
Botteri's sparrow is found mostly in Mexico but its habitat extends into small parts of southeast Arizona and Texas.

Hot and Humid for Humans, Bountiful for Nature

Plants and animals thrive with the summer monsoon rains.
Thousands of migratory bats reside under Tucson bridges during the summer months.

Wildlife Officials Seek Volunteers to Help Count Bats

Bat count is an annual attempt to get estimates of population of two species.

Jaguar Video Rekindles Debate over Santa Ritas Land Use

Endangered animal habitat and mining both a part of the range south of Tucson.
An image of El Jefe, the only known jaguar in the United States, on video in the Santa Rita Mountains.

Jaguar Spotted on Video in Santa Rita Mountains

Jaguar habitat conservation group releases video of only known jaguar in United States
Wild burros awaiting adoption.

State Wants to Reduce Wild Burro Herds Numbering 4,800

Federal agency says it must conduct environmental analysis before taking action.

Why Did the Wildlife Cross Over the Road? To Reduce Road Kill

First wildlife overpass in state going over highway north of Tucson; more to come.
The bison like to wallow or roll around in the dirt, but the 2,000-pound animal leaves small craters. And far from hunters, the herd in the Grand Canyon has tripled in size to about 350 animals.

Grand Canyon Bison Problem: Hunt Them or Relocate?

Park Service says herd of 600 overgrazing, draining precious water supplies.
Female bighorn sheep

29 More Desert Bighorn Sheep Released in Santa Catalinas

23 ewes, 6 rams join more than 3 dozen already living in Pusch Ridge area.
A California condor soars near the Grand Canyon. It is the most endangered bird in North America. It's also the largest, with a wingspan of about nine feet.

Wildfire Added to List of Threats to Condor Population

Study shows about half of wild birds live long enough to raise a chick

More Bighorn Sheep Coming to Santa Catalinas Near Tucson

A recent pneumonia outbreak had threatened to delay the release.

Northern Arizona Forest Thinning Work Gets Under Way

Slow start to Four Forest Restoration Initiative; test plots show its expected benefits

See 10,000 Bats Take Flight on Tucson's North Side

Pima County officials host viewing event before bats begin migration south.
Organ Pipe cacti are native to Mexico, but are also found in part of Arizona, in the Organ Pipe Cactus National Monument.

National Park Service Turns 99, Centennial Celebration Begins

Service oversees hundreds of parks and monuments across the country.

METRO WEEK: Wildfire's Effect on Environment, Bighorn Sheep

How the Finger Rock Fire will affect the ecosystem and animals that depend on it

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