For most audio recordings in this guide, we have attempted to identify obvious background sounds that might compete with the calls of the species being portrayed. While this analysis is fairly complete, we realize there are inconsistencies in the thoroughness of our documentation. We have not attempted to identify insect sounds and welcome such information for any of the cuts in this guide. 

        Below is an alphabetical list of species (excluding those portrayed in the species accounts) that we have identified calling in the background of cuts on this guide.

Amphibians

Green Frog Rana clamitans

Spring Peeper Pseudacris crucifer

Squirrel Tree Frog Hyla squirella

Birds

Black-bellied Plover Pluvialis squatarola

Black-necked Stilt Himantopus mexicanus

Brown-crested Flycatcher Myiarchus tyrannulus

Canada Goose Branta canadensis

Carolina Chickadee Poecile carolinensis

Carolina Wren Thryothorus ludovicianus

Caspian Tern Sterna caspia

Clapper Rail Rallus longirostris

Couch’s Kingbird Tyrannus couchii

Golden-fronted Woodpecker Melanerpes aurifrons

Gray Jay Perisoreus canadensis

Great Kiskadee Pitangus sulphuratus

Greater Yellowlegs Tringa melanoleuca

Green Jay Cyanocorax yncas

Herring Gull Larus argentatus

House Sparrow Passer domesticus

Killdeer Charadrius vociferus

Laughing Gull Larus atricilla

Long-billed Thrasher Toxostoma longirostre

Mountain Chickadee Poecile gambeli

Northern Cardinal Cardinalis cardinalis

Common Pauraque Nyctidromus albicollis

Red-tailed Hawk Buteo jamaicensis

Sandhill Crane Grus canadensis

Semipalmated Plover Charadrius semipalmatus

Snow Geese Chen caerulescens

Spot-breasted Wren Thryothorus maculipectus

Stellar’s Jay Cyanocitta stelleri

Sooty Tern Sterna fuscata

Willet Catoptrophorus semipalmatus

Mammals

Red Squirrel Tamiasciurus hudsonicus

White-tailed Prairie-dog Cynomys leucurus