Kent Note Sound-Alikes

The three ivory-bill notes at the beginning of this clip are part of a playback of the 1935 recording, as recorded on an ARU at a distance of 145 meters. The remaining four clips, all recorded by ARUs in Arkansas, were identified on the basis of careful analysis of surrounding context.

Each of these kent-like notes is presented in more detail below.

Gray squirrel

Kent-like note in isolation

Click the play arrow below the spectrogram to hear a kent-like note from a gray squirrel in isolation:


In comparison to Ivory-billed Woodpecker:

Click the play arrow below the spectrogram to hear an Ivory-billed Woodpecker kent note (re-recorded on an ARU from a distance of 145 meters in the forest), followed immediately by a kent-like sound from a gray squirrel:

 

In context, followed by whine:

Click the play arrow below the spectrogram to hear a kent-like note from a gray squirrel in its original context, followed by the tell-tale descending whine:


Common grackle

Kent-like note in isolation:

Click the play arrow below the spectrogram to hear a kent-like note in isolation, suspected to be from a Common Grackle:


In comparison to Ivory-billed Woodpecker:

Click the play arrow below the spectrogram to hear an Ivory-billed Woodpecker kent note (re-recorded on an ARU from a distance of 145 meters in the forest), followed immediately by a kent-like sound suspected to be from a Common Grackle:

 

In original context:

Click the play arrow below the spectrogram to hear this probable grackle note in its original context, followed by two similar notes:

The possible grackle note, while very similar to ivory-bill kents, is one of many kent-like notes recorded over a one-hour period, interspersed with clearly identifiable sounds of Common Grackles. The start and end of the occurrence of kent-like notes matches the start and end of clear grackle notes, apparently from a nearby flock.

Great Blue Heron

Kent-like note in isolation:

Click the play arrow below the spectrogram to hear a kent-like note from a Great Blue Heron:

 

In comparison to Ivory-billed Woodpecker:

Click the play arrow below the spectrogram to hear an Ivory-billed Woodpecker kent note (re-recorded on an ARU from a distance of 145 meters in the forest), followed immediately by a kent-like note from a Great Blue Heron:

 

In original context:

Click the play arrow below the spectrogram to hear this Great Blue Heron note in its original context, followed by two more typical heron notes:


 

Wild Turkey

An individual call note from a Wild Turkey can resemble a kent note from an Ivory-billed Woodpecker. Although this example is taken from the beginning of a series of more typical turkey notes, turkeys sometimes give these more kent-like notes in isolation, making them more difficult to identify.

In isolation:

Click the play arrow below the spectrogram to hear an isolated kent-like turkey note:

 
 

In comparison to Ivory-billed Woodpecker:

Click the play arrow below the spectrogram to hear an Ivory-billed Woodpecker kent note (re-recorded on an ARU from a distance of 145 meters in the forest), followed immediately by the same kent-like note from a Wild Turkey:

 
 

In original context:

Click the play arrow below the spectrogram to hear this Wild Turkey note in its original context, followed by a series of more typical turkey notes:

 

 
Next page

Previous page