Black-Bellied Whistling Duck - nocturnal; whistles (does not quack); nests in cavities; tropical duck that ranges into the Southwest; can be seen in Arizona

Gallinule - 

Gambel's Quail - gregarious; males and females sport a bobbing black topknot of feathers; males have orange crown; precocial (babies run around and feed themselves as soon as they are hatched); common on zoo grounds - ours and the wild quail will call to eachother, trying to convince eachother to join their groups.

Green Heron - 

Green-Winged Teal - eat mainly acquatic invertebrates and seeds; feed in shallow water near shorelines, mudflats, and agricultural fields

Hooded Mergansers - eat small fish, aquatic insects, crustaceans, amphibians, vegetation, and mollusks; dive in clear, shallow forest ponds, rivers, and streams and locate prey by sight; eyes specially adapted to see underwater; propel themselves with their feet and use slender, serrated bills to grasp prey

House Finch - native to the Southwest, but now found coast to coast; adaptable, colorful, cheery-voiced; females and young have plain brown faces, males have red eyebrown, forehead, and chest;

Snowy Egret - poached nearly to extinction for feathers in 1800s; common on zoo grounds; yellow feet

White-Faced Ibis

White-Faced Whistling Duck - nocturnal, whistles, nests in cavities, NOT found in Arizona, on AZ trail for companionship with other ducks.

White-Winged Dove

Wood Duck - nest in tree cavities and chicks will jump out of trees and bounce on the ground; eat seeds, fruits, insects and arthropods; may eat acorns and other nuts and grains when aquatic foods are unavailable