About 90 seconds · starter preview
Your first listen
Three eight-second excerpts. Notice spacing and texture, reveal the recordist’s note, and see the sound. No score or time limit.
Start listening →Listen · notice · check the evidence
Crow calls, without the jargon.
American crows make more than the familiar caw. Start by hearing differences in short recordings, then use a sound picture to see when they happen. A call’s shape is a clue to compare, not an English translation.
Audio + readable evidence
Caw and rattle: what differs?
Compare the same excerpts side by side. Learn what a spectrogram shows, and why it cannot tell us whether a crow is saying “hello.”
Open the comparison →An easy way into the Atlas
- Listen to a short example. Notice pauses, repetition, and changes in pitch.
- Compare its sound picture with another example. Look for patterns, not a message.
- Open the source. Check who recorded it and what they actually observed.
Use headphones at a comfortable volume. Do not broadcast these recordings to wild birds. This starter uses source descriptions; independent listening and answer-key review are still pending.