Sorry about long neglecting this thread, I had lost my original list and haven't visited in a while, but will now give the much needed updates to this thread.
Everything in the entry is the same except the rhinoceros hornbills have been replaced with oriental pied hornbill, and unsigned turtle has been replaced with fly river turtle.
Starting in the Orinoco free flight (These are just the birds I could find, there are definitely more):
Scarlet Headed Black Bird
Crimson Rumped Toucanet
Green Aracari
Roseate Spoonbill
Chestnut Eared Aracari
Guira Cuckoo
Red Crested Cardinal
Troupial
Yellow Rumped Cacique
Red Rumped Cacique
Screaming Piha
Crested Oropendola
Scarlet Ibis
Puerto Rican Woodpecker
Green Oropendola
Chiloe Wigeon
Orinoco Goose
Black Bellied Whistling Duck
Southern Pochard
Rosy Billed Pochard
Ringed Teal
In the Small Exhibit to the right as you enter:
Antillean Euphonia
Swallow Tanager
Little Tinamou
Scaled Pigeon
Golden Headed Manakin
Golden Collared Manakin
Red Capped Manakin
Spangled Cotinga
In the Large Exhibit to the left as you enter:
Giant Anteater
Giant Wood Rail
Northern Helmeted Currasow
Pale Mandibled Aracari
Toco Toucan
Troupial
Yellow Crowned Night Heron
Boat Billed Heron
Montezuma Oropendola
If you take a left towards the exit sign, you can get a close look at an unsigned exhibit which contains:
Golden Crested Quetzal
Fiery Billed Aracari
Purple Throated Fruitcrow
Ruddy Ground Dove
Chiriqui Quail Dove
White Tailed Trogon
Blue Crowned Motmot
Following the path, in a small glass exhibit to your left:
Pied Tamarin
In the island to your right:
White Faced Saki Monkey
In the opening to your left after the tamarin enclosure:
Giant River Otter
As you approach the sloth forest, there is a small glass exhibit to your right:
Pygmy Marmoset
In the chained off toucan nursery there are:
Red Breasted Toucan
In an open air tree exhibit:
Brown Throated Three Toed Sloth
In a chained exhibit to the right of the sloth:
Emperor Tamarin
Black Throated Emerald Toucanet
Black Necked Aracari
In a tall cylindrical exhibit above:
Venezuelan Red Howler Monkey
Northern Helmeted Currasow
In a pool below you as you leave the sloth forest:
Orinoco Crocodile
Red Bellied Piranha
In a tall cylindrical exhibit at the end of the bridge:
Long Wattled Umbrella Bird
Keel Billed Toucan
Many Banded Aracari
Andean Cock of the Rock (And scarlet ssp)
Guinean Cock of the Rock
Nocturnal Currasow
Capuchin Bird
As you descend the ramp and pass the otters there is a small exhibit to your left:
Dyeing Poison Frog
Yellow Banded Poison Dart Frog
Straight ahead there is a tank with curved glass:
Caiman Lizard
In a ditch to the side:
Red Footed Tortoise
In a large fenced in exhibit above the caiman lizards:
Andean Cock of the Rock
Capuchin Bird
Blue Crowned Motmot
In a medium sized exhibit to the right:
Golden Lion Tamarin
Fiery Billed Aracari
Plate Mountain Toucanet
Wattled Guan
(Signed but nowhere to be seen) Pale Winged Trumpeter
In two exhibits to the right as you pass into the ground level of Orinoco:
Yellow Headed Amazon
Emerald Tree Boa
In an incline down to a large tank:
Green Anaconda
Discus
Tetra
In a cave network of exhibits:
Goliath Bird Eater
Pink Toed Turantula
Red Tailed Boa
Dwarf Caiman (Growing quite large now)
Vampire Bat
As you exit this area, there is a small pond and a few exhibits with:
Electric eel
Yellow Spotted Amazon Turtle
Polka Dot Stingray
Silver Arrowana
Aquatic Cecillian
As you turn, you enter a vast cave network with:
Veriscolor barbet
Ruddy Ground Dove
Hawk Headed Parrot
Razorbill Currasow
Toco Toucan
Wattled Currasow
Hoffman's Two Toed Sloth
Curl Crested Aracari
Elegant Crested Tinamou
As You descend there are a variety of tanks (including the one in the theatre):
Clouded archerfish
Fly River Turtle
Discus
Budgett's Frog (Off exhibit)
Green and Black Dart Frog
Blue Dart Frog
Antillean Manatee
Arapaima
Red Tailed Catfish
Arrau Turtle
Fork Snouted Catfish
Spotted Shovel Nosed Catfish
Again, I apologize for neglecting this thread and taking so long to update it, I will upload this list in chunks, including fish.