Commercial chicken barn in Canada
Commercial chicken barn in Canada

Photo by Chicken Farmers of Canada (2010)

Small commercial poultry barn at University of Massachusetts, Amherst
Small commercial poultry barn at University of Massachusetts, Amherst

Photo by Kevin Rutherford

Turkeys on commercial poultry farm
Turkeys on commercial poultry farm

Photo by Scott Bauer, USDA-Agricultural Research Service 

Laying hens in a commercial poultry barn in São Paulo, Brazil
Laying hens in a commercial poultry barn in São Paulo, Brazil

Photo by Secretaria de Agricultura e Abastecimento do Estado de São Paulo

Backyard turkeys at Heritage Turkey Farm in Waupaca, Wisconsin
Backyard turkeys at Heritage Turkey Farm in Waupaca, Wisconsin

Photo by Kelly Heuser, Heritage Turkey Farm

Backyard chickens and coop in Vermont
Backyard chickens and coop in Vermont

Photo by Jared Benedict (2006)

Laying hens on backyard farm in New York
Laying hens on backyard farm in New York

Photo by Erica Cirino

Wildlife swab sample vials at USDA - Wisconsin Wildlife Services, Sun Prairie
Wildlife swab sample vials at USDA - Wisconsin Wildlife Services, Sun Prairie

Photo by Erica Cirino

J.D. McComas, wildlife technician, holds a vial of freshly collected swab samples near USDA - Wildlife Services headquarters, Sun Prairie
J.D. McComas, wildlife technician, holds a vial of freshly collected swab samples near USDA - Wildlife Services headquarters, Sun Prairie

J.D. McComas, wildlife technician, holds a vial of freshly collected swab samples near USDA - Wildlife Services headquarters, Sun Prairie. This and other samples will be shipped to the U.S. Geological Survey - National Wildlife Health Center for testing as part of the national U.S. avian influenza surveillance plan.

Photo by Erica Cirino

J.D. McComas, wildlife technician (left), and Dan Hirchert, director of USDA - Wisconsin Wildlife Services, Sun Prairie
J.D. McComas, wildlife technician (left), and Dan Hirchert, director of USDA - Wisconsin Wildlife Services, Sun Prairie

J.D. McComas, wildlife technician (left), and Dan Hirchert, director of USDA - Wisconsin Wildlife Services collect swab samples from a hunter-harvested female mallard duck.

Photo by Erica Cirino

U.S. Geological Survey - National Wildlife Health Center, Madison
U.S. Geological Survey - National Wildlife Health Center, Madison

Photo by Erica Cirino

Dr. Hon Ip, head of Diagnostic Virology, in his lab at U.S. Geological Survey - National Wildlife Health Center, Madison
Dr. Hon Ip, head of Diagnostic Virology, in his lab at U.S. Geological Survey - National Wildlife Health Center, Madison

Photo by Erica Cirino

The author of this story in Dr. Hon Ip's diagnostic virology lab at U.S. Geological Survey - National Wildlife Health Center, Madison
The author of this story in Dr. Hon Ip's diagnostic virology lab at U.S. Geological Survey - National Wildlife Health Center, Madison

Photo by Dr. Hon Ip

Necropsy Room at U.S. Geological Survey - National Wildlife Health Center, Madison
Necropsy Room at U.S. Geological Survey - National Wildlife Health Center, Madison

Photo by Erica Cirino

Decontamination area at U.S. Geological Survey - National Wildlife Health Center, Madison
Decontamination area at U.S. Geological Survey - National Wildlife Health Center, Madison

Photo by Erica Cirino

Biological Safety Support facility at U.S. Geological Survey - National Wildlife Health Center, Madison
Biological Safety Support facility at U.S. Geological Survey - National Wildlife Health Center, Madison

Photo by Erica Cirino

Kristina Egstad, biological technician at Biological Safety Support, U.S. Geological Survey with bottle of avian influenza virus transport medium - National Wildlife Health Center, Madison
Kristina Egstad, biological technician at Biological Safety Support, U.S. Geological Survey with bottle of avian influenza virus transport medium - National Wildlife Health Center, Madison

Photo by Erica Cirino

Lab technician analyzing virus samples with hooded microscope that diverts airflow with pathogens into hood at U.S. Geological Survey - National Wildlife Health Center, Madison
Lab technician analyzing virus samples with hooded microscope that diverts airflow with pathogens into hood at U.S. Geological Survey - National Wildlife Health Center, Madison

Photo by Erica Cirino

Lab technicians catalogue avian influenza test results in a database at U.S. Geological Survey - National Wildlife Health Center, Madison
Lab technicians catalogue avian influenza test results in a database at U.S. Geological Survey - National Wildlife Health Center, Madison

Photo by Erica Cirino

Lab technician checks preps avian influenza samples for testing at U.S. Geological Survey - National Wildlife Health Center, Madison
Lab technician checks preps avian influenza samples for testing at U.S. Geological Survey - National Wildlife Health Center, Madison

Photo by Erica Cirino

Embryonic chicken eggs being incubated at U.S. Geological Survey - National Wildlife Health Center, Madison
Embryonic chicken eggs being incubated at U.S. Geological Survey - National Wildlife Health Center, Madison

Wildlife samples that test positive for lethal avian influenza are injected into embryonic chicken eggs to identify the specific virus strain at U.S. Geological Survey - National Wildlife Health Center, Madison.

Photo by Erica Cirino