From sound to meaning

“I heard a repeated call” is an observation. “The crow was warning its friends” is an interpretation. A useful listening habit is to keep both visible, then ask what evidence would connect them.

About 4 minutes · Pause whenever you like. Audio loads on request. Use headphones; do not broadcast recordings to wild birds.

Sound, setting and meaning are different layers

One archive note describes a lone bird in a tree. Another describes a group above the observer, with birds circling and others arriving. You can compare those reported settings. They do not establish a universal translation or prove what information another crow received.

Try it with a recording

Listen to a short section of each original recording. Make an observation about timing or texture. Read the notes, then state a possible interpretation as a question: what would you need to observe repeatedly to test it? No interpretation is scored here.

A lone bird in an urban park

Field recording · 35 seconds

A 35.2-second original by Jonathon Jongsma. The source calls it atypical and describes a lone bird; that does not establish its meaning.

Frequency over time for a lone bird in an urban park. Read the source notes below for the archive's description. — Read left to right as time passes; higher marks represent higher frequencies. Colour shows recorded energy, not the bird’s intent. Recording levels affect brightness.

Listen now. The observation and replay controls will be ready shortly.

Recording source and limits

Archive identifier: xc91560.

Jonathon Jongsma, 2011-12-16. CC BY-SA 3.0.

Archive description: rather atypical call. Lone bird calling from a tree in an urban park.

The group label comes from source metadata. Source observations, where supplied, are the recordist’s account; they are not a reviewed answer key or a translation.

Inspect the original recording and source notes

Open the original sound picture

Locate this recording in the atlas Open audio file

A group above the observer

Field recording · 153 seconds

A roughly two-and-a-half-minute original by Jonathon Jongsma. Read the source for the observer’s account; you can compare a short section without finishing the file.

Frequency over time for a group above the observer. Read the source notes below for the archive's description. — Read left to right as time passes; higher marks represent higher frequencies. Colour shows recorded energy, not the bird’s intent. Recording levels affect brightness.

Listen now. The observation and replay controls will be ready shortly.

Recording source and limits

Archive identifier: xc121396.

Jonathon Jongsma, 2013-02-10. CC BY-SA 3.0.

Archive description: A small group of crows (10-15) perched above me in a large cottonwood tree and screaming down at me. Periodically one or two would launch into the air and circle above me while calling. Several others flew in to join

The group label comes from source metadata. Source observations, where supplied, are the recordist’s account; they are not a reviewed answer key or a translation.

Inspect the original recording and source notes

Open the original sound picture

Locate this recording in the atlas Open audio file

Check the evidence · no acoustic score

Which statement stays within the group recording’s evidence?

Use the explanation and source notes above. Choices last for this visit and are not sent to analytics.

Read the explanation

The supported statement is the reported group setting. Meaning requires evidence beyond a source description and a sound picture.

Follow the evidence

Cornell Lab’s American crow sound guide

Source descriptions provide context. Recording labels and listening examples await independent acoustic review; these questions check visible facts, not recognition of unfamiliar calls.

Make this a listening habit

Six skills, at your own pace. An exploration mark means you chose to finish a lesson; it does not certify call recognition. Marks stay in this browser, with no account or synchronization.