I consider it to be a worthwhile update, in many cases it means the species is gone. I tend to be slow in updating due to thread sizes anyway so it gives a chance for any updates/corrections to the situation.
Hemker Park & Zoo now has White Crowned Hornbill and Trumpeter Hornbill. I did not see their Great Indian Hornbill, but it’s quite possible it was brought to their off-site location.
Cleveland Metroparks Zoo and Keystone Safari also keep laughing kookaburra. I didn't see the southern ground hornbill on my visit to Keystone Safari on September 30, but it's possible I missed the exhibit... I might have missed an exhibit or two because of the layout of the place.
Assiniboine Park?
Binder Park
Birmingham
Blank Park
Brevard
Brights
Bronx
Busch Gardens Tampa
Cheyenne Mountain
Columbus
Dallas
Disney’s Animal Kingdom
Fort Worth
Franklin Park
Gladys Porter
Greensboro Science Center
Hemker
Honolulu
Houston
Indianapolis
John Ball
Lion Country Safari
Kansas City
Keystone Safari
Memphis
Metro Richmond
Milwaukee
Naples
Natural Bridge
Natural Encounters Inc
Omaha
Oregon
Palm Beach
Phoenix
Philadelphia
Point Defiance
Potawatomi
Potter Park
Roosevelt Park
Safari West
San Antonio
San Diego
San Diego Zoo Safari Park
Santa Barbara
SeaWorld San Diego?
SeaWorld Orlando
Six Flags Discovery Kingdom?
Staten Island
Tautphaus Park
Texas State Aquarium
The Living Desert
Toronto
Tracy Aviary
Tulsa
Virginia
Wildlife World
Zoo Atlanta
Zoo Boise
Zoo Knoxville
Zoo Tampa
Abilene
ABQ Biopark
African Lion Safari
Audubon
Busch Gardens Tampa Bay
Cheyenne Mountain
Cincinnati
Dallas
DAK
Denver
Ellen Trout
Fort Worth
Little Rock
Los Angeles
Maryland
Memphis
Mesker Park
National
Natural Encounters Inc
North Carolina
Omaha
Phoenix
Sacramento
Safari West
San Diego Zoo Safari Park
Sedgwick County
Sylvan Heights
The Living Desert
Timbavati Wildlife Park
Toronto
Tracy Aviary
Turtle Back
Wildlife World
Zoo Atlanta
Lophoceros
Crowned Hornbill (2 holders)
Houston
San Antonio
African Pied Hornbill (2 holders)
Loveland Living Planet Aquarium
Wildlife World
African Gray Hornbill (1 holder)
Wildlife World
Berenicornis
White-crowned Hornbill (1 holder)
St. Augustine Alligator Farm
Tockus
Eastern Yellow-billed Hornbill (2-3 holders)
Dallas World Aquarium
St. Augustine Alligator Farm?
Zoo Miami
Southern Yellow-billed Hornbill (3 holders)
Indianapolis
Lake Superior
San Diego Zoo Safari Park
Jackson’s Hornbill (1 holder?)
Dallas?
Von der Decken’s Hornbill (19-20 holders)
Binder Park
Bronx
Charles Paddock
Great Plains
Henry Vilas
Hogle
Kansas City
Living Desert
Los Angeles
Maryland
Minnesota
National
Oklahoma City
Six Flags Discovery Kingdom
Sylvan Heights
The Living Desert
Toronto?
Virginia Safari Park
Wildlife World
Zoo Tampa
Red-billed Hornbill (27 holders)
Birmingham
Brookfield
Central Florida
Chattanooga
Denver
Discovery Cove
Fort Wayne
Honolulu
Lincoln Park
Memphis
Milwaukee
Moody Gardens
National Aviary
Oakland
Oklahoma City
Omaha
Oregon
Riverbanks
Sacramento
Santa Fe Teaching
SeaWorld San Antonio
SeaWorld Orlando
St. Louis
Tulsa
Wildlife Safari
Wildlife World
Zoo Tampa
Horizocerus
Western Long-tailed Hornbill (3 holders)
Bronx
North Florida Wildlife Center
San Diego
Ceratogymna
Yellow-casqued Hornbill (1-2 holders)
Memphis
San Diego Zoo Safari Park?
Black-casqued Hornbill (2 holders)
North Florida Wildlife Center
San Diego
Bycanistes
Silvery-cheeked Hornbill (15-18 holders)
African Lion Safari
Brights
Bronx?
Capron Park
Columbus
Emerald Forest Bird Gardens?
Fort Wayne
Hemker
Kansas City
Omaha
Pittsburgh?
Safari North Wildlife Park
Safari West
Six Flags Discovery Kingdom
Stone
Wildlife World
Zoo Boise
Zoo Tampa
White-thighed Hornbill (1 holder)
North Florida Wildlife Center
Trumpeter Hornbill (23-24 holders)
Abilene
Binder Park
Boise
Brookfield?
Buffalo
Caldwell
David Traylor
Dallas
Denver
Disney’s Animal Kingdom
Fort Worth
Gladys Porter
Greensboro Science Center
Hemker
Natural Encounters Inc
North Carolina
Potawatomi
Potter Park
Reid Park
Roosevelt Park
Safari North Wildlife Park
Safari West
San Diego
Zoo Tampa
Buceros
Great Indian Hornbill (13 holders)
Audubon
Bronx
Denver
DWA
Hemker
Houston
Reid Park
SDZSP (bts)
San Francisco
St. Louis
Toronto
Zoo Miami
Zoo Tampa
Rhinoceros Hornbill (25-28 holders)
Audubon
Cincinnati
Dallas World Aquarium
Denver
El Paso
Fresno Chaffee
Gladys Porter
Hemker
Houston
Jacksonville
Kansas City
Los Angeles
Milwaukee
Minnesota
Nashville
National Aviary?
North Florida Wildlife Center
Palm Beach
Philadelphia?
Phoenix
Santa Barbara
SDZSP (bts)
Stone
St. Louis
Sylvan Heights?
Toledo
Virginia
Zoo Atlanta
Anthracoceros
Oriental Pied Hornbill (1-3 holders)
Bronx?
Dallas World Aquarium?
Indian Creek
Black Hornbill (1 holder)
Jackson
Rhabdotorrhinus
Wrinkled Hornbill (23-24 holders)
ABQ Biopark
Audubon
Baton Rouge
Brevard
Emerald Forest Bird Gardens?
Fort Wayne
Fort Worth
Honolulu
Jacksonville
Los Angeles
Moody Gardens
Oklahoma City
Peoria
Point Defiance
Phoenix
Roger Williams Park
San Diego
San Diego Zoo Safari Park
San Francisco
Sedgwick County
Toronto
Tracy Aviary
Tulsa
Zoo Miami
Blyth’s Hornbill (2 holders)
Dallas World Aquarium
North Florida Wildlife Center
Bronx
Los Angeles
SeaWorld San Diego?
St. Augustine Alligator Farm
ZooWorld Panama City Beach
Wreathed (9-10 holders)
Dallas
Jacksonville
North Florida Wildlife Center
Oakland
Prospect Park
Riverbanks
San Antonio
Sylvan Heights?
Wildlife World
Zoo Atlanta
Wood-hoopoes
Phoeniculus
Green Wood-Hoopoe (18 holders)
Birmingham
Bronx
Cape May
Columbus
Dallas
DAK
Detroit
Indianapolis
Kansas City
Memphis
Nashville
North Carolina
San Diego
San Diego Zoo Safari Park
SeaWorld San Diego
The Living Desert
Woodland Park
Zoo Atlanta
Bee-eaters
Merops
White-fronted Bee-eater (3 holders)
Bronx
San Diego
San Diego Zoo Safari Park
White-throated Bee-eater (2 holders)
Bronx
San Diego
Northern Carmine Bee-eater (3-4 holders)
Cincinnati?
Disney’s Animal Kingdom
San Diego
St. Louis
Rollers
Coracias
Purple Roller (1 holder?)
San Diego Zoo Safari Park?
European Roller (2 holders)
Micke Grove
San Diego Zoo Safari Park
Racket-tailed Roller (2-3 holders)
Living Desert
Jacksonville?
Zoo Atlanta
Blue-bellied Roller (34 holders)
Binder Park
Birmingham
Bronx
Brookfield
Central Florida
Charles Paddock
Columbus
Dallas
Dallas World Aquarium
Detroit
Great Plains
Hemker
Jacksonville
Maryland
Memphis
Mill Mountain
Minnesota
Mississipi Aquarium
North Carolina
Oakland
Oklahoma City
Omaha
Oregon
Philadelphia
Safari North Wildlife Park
San Diego
San Diego Zoo Safari Park
San Francisco
Sylvan Heights
Toledo
Toronto
Wildlife World
Wildwood Wildlife Park
Zoo Tampa
Eurystomus
Oriental Dollarbird (2 holders)
Blank Park
San Diego
Motmots
Momotus
“Blue-crowned” Motmot (23-25 holders)
Birmingham
Bronx
Brookfield
Central Park?
Charles Paddock
Cincinnati
Dallas World Aquarium
Denver?
Fort Worth
Fresno Chaffee
Henry Vilas
Houston
Minnesota
Montreal Biodome
Nashville
National Aquarium
Omaha
Reid Park
Roger Williams Park
San Diego
Staten Island
Topeka
Toronto
Zoo Miami
Zoo Tampa
ABQ Biopark
Aquarium of the Pacific
Bronx
Brookfield
Denver?
Houston
Lincoln Park
Memphis
Milwaukee
Philadelphia
San Antonio
San Diego
SCBI
Sedgwick County
St. Louis
Tracy Aviary
Dacelo
Laughing Kookaburra (74 holders)
Adventure Aquarium
African Lion Safari
Alexandria
Alligator Adventure
Animal Adventures
Binder Park
Birmingham
Blank Park
Brevard
Brights
Bronx
Brookfield
Catcotin
Cape May
Carolina Raptor Center
Cincinnati
Claws & Paws Animal Park
Cleveland
Columbus
David Traylor
Detroit
Franklin Park
Fresno Chaffee
Gulf Breeze
Honolulu
Kansas City
Keystone Safari
Lake Superior
Leesburg Animal Park
Lehigh Valley
Lincoln Children’s
Los Angeles
Lupa
Luray
Memphis
National Aquarium
North Carolina
NEW
Oklahoma City
Omaha
Palm Beach
Rainforest Adventures
Roer’s Zoofari
Roger Williams Park
Sacramento
Safari North Wildlife Park
Safari West
Salisbury
San Diego
San Diego Zoo Safari Park? (ambassador)
San Francisco
Santa Barbara
Santa Fe Teaching
Scovill
Sedgwick County
Southwicks
Stone
St. Louis
Sylvan Heights
The Living Desert
Toledo
Toronto
Tracy Aviary
Turtle Bay Exploration Park
Virginia Safari Park
Wildlife Safari
Wildlife World
Wildwood Wildlife Park
Woodland Park
World Bird Sanctuary
Zoo Tampa
Zoo Atlanta
Blue-winged Kookaburra (4 holders)
Capron Park
Chehaw Wild Animal Park
Houston
Toledo
African Lion Safari
Brights
Bronx?
Capron Park
Columbus
Emerald Forest Bird Gardens?
Fort Wayne
Hemker
Kansas City
Omaha
Pittsburgh?
Safari North Wildlife Park
Safari West
Six Flags Discovery Kingdom
Stone
Wildlife World
Zoo Boise
Zoo Tampa
Binder Park
Bronx
Charles Paddock
Great Plains
Henry Vilas
Hogle
Kansas City
Living Desert
Los Angeles
Maryland
Minnesota
National
Oklahoma City
Six Flags Discovery Kingdom
Sylvan Heights
The Living Desert
Toronto?
Virginia Safari Park
Wildlife World
Zoo Tampa
Binder Park
Birmingham
Bronx
Brookfield
Central Florida
Charles Paddock
Columbus
Dallas
Dallas World Aquarium
Detroit
Great Plains
Hemker
Jacksonville
Maryland
Memphis
Mill Mountain
Minnesota
Mississipi Aquarium
North Carolina
Oakland
Oklahoma City
Omaha
Oregon
Philadelphia
Safari North Wildlife Park
San Diego
San Diego Zoo Safari Park
San Francisco
Sylvan Heights
Toledo
Toronto
Wildlife World
Wildwood Wildlife Park
Zoo Tampa
Birmingham
Bronx
Brookfield
Central Park?
Charles Paddock
Cincinnati
Dallas World Aquarium
Denver?
Fort Worth
Fresno Chaffee
Henry Vilas
Houston
Minnesota
Montreal Biodome
Nashville
National Aquarium
Omaha
Reid Park
Roger Williams Park
San Diego
Staten Island
Topeka
Toronto
Zoo Miami
Zoo Tampa
Sylvan Heights has not had any hornbills on display recently. The old Wreathed enclosure no longer exists I think, and the Rhinoceros enclosure holds King Vulture; this was confirmed to still be the case recently.
Binder Park
Bronx
Charles Paddock
Great Plains
Henry Vilas
Hogle
Kansas City
Living Desert
Los Angeles
Maryland
Minnesota
National
Oklahoma City
Six Flags Discovery Kingdom
Sylvan Heights
The Living Desert
Toronto?
Virginia Safari Park
Wildlife World
Zoo Tampa