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The American Kestrel (Falco sparverius) has a variety of vocalizations that are distinctive and important for its communication. Here's a detailed overview of its sounds:

1. American Kestrel Call
The most common call of the American Kestrel is often described as a series of sharp, high-pitched "klee-klee-klee" or "killy-killy-killy" sounds.
This call is usually used as an alarm call when the bird feels threatened or when it's trying to defend its territory.
It is loud, fast-paced, and can be repeated several times in succession. Both males and females use this call, but it's more frequent during moments of high alert.
2. American Kestrel Sound
In addition to its alarm call, the American Kestrel also makes a softer, whining sound, which is usually heard when they are near their nest or during courtship interactions.
This whine is a drawn-out, descending note that serves as a contact call between mates or as a way to communicate during feeding.
This sound is less aggressive and is often used to maintain communication between the pair, especially in the breeding season.
3. American Kestrel Voice
The voice of the American Kestrel includes not only the loud alarm calls but also quieter chittering or chattering sounds. These softer vocalizations are often heard during close-range interactions between pairs or within family groups.
The juveniles have a distinct begging call, which is high-pitched, repetitive, and insistent. They use this sound when they are hungry, especially when calling for food from their parents.
The vocalizations of the American Kestrel are adapted to their open habitats, allowing them to be heard over long distances when needed.
The variety in the American Kestrel's calls and sounds plays a crucial role in their communication, helping them warn of danger, bond with mates, and care for their young. Their sharp and piercing voice makes them easily identifiable in the wild.

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Animals
Transcript
00:00The American Kestrel has a distinctive call that is often described as a series of high-pitched, rapid-click-click-click, or kill-ill, sounds.
00:30These calls can vary slightly depending on the situation, such as during the flight,
00:56when alarmed, or when communicating with other kestrels.
01:26The call is sharp and somewhat repetitive, making it easily recognizable in the field.
01:47This call is usually given in a series of three to six or more notes and is often used
01:53in various situations, such as when the bird is alarmed, disturbed, or feeling threatened.
02:16The American Kestrel has a distinctive call that is often described as a series of high-pitched, rapid-click-click, or kill-ill, sounds.
02:26These calls can vary slightly depending on the situation, such as during the flight, when alarmed, or communicating with other kestrels.
02:36Both males and females produce this call, but it is often louder and more frequent when
03:04they are defending their territory or warning off intruders.
03:09The intensity and speed of the call may increase if the perceived threat is closer or more serious.
03:34The American Kestrel has a distinctive call that is often described as a series of high-pitched, rapid-click-click, or kill-ill, sounds.
03:54The American Kestrel has a distinctive call that is often described as a series of high-pitched, rapid-click-click, or kill-ill, sounds.
04:14The American Kestrel has a distinctive call that is often described as a series of high-pitched, rapid-click-click, or kill-ill, sounds.
04:34Another vocalization of the American Kestrel is a long, descending, hawaiian or whimpering sound, often made by both adults and juveniles.
04:49This call is more subtle and can be heard when kestrels are communicating within the pair, especially during the breeding season.
05:04This call is more subtle and can be heard when kestrels are communicating within the pair, especially during the breeding season.
05:14This call is more subtle and can be heard when kestrels are communicating within the pair, especially during the breeding season.
05:24The chattering calls, which is during close interaction such as courtship or feeding between mates, the American Kestrel may make soft chattering or chittering sounds.
05:53These sounds are usually quieter than the click call and are often a sign of bounding or communication between the pair.
06:00Males sometimes use these calls to communicate with females, when offering food, a behavior that is often a part of their courtship rituals.
06:23Overall, the American Kestrel vocalizations are essential for communication within their species, helping to maintain authorities' strength in pair bounds and warn others of the potential dangers.
06:49Overall, the American Kestrel vocalizations are essential for communication within their species, helping to maintain authorities' strength in pair bounds and warn others of the potential dangers.
07:19Overall, the American Kestrel vocalizations are essential for communication within their species, helping to maintain authorities' strength in pair bounds and warn others of the potential dangers.
07:29Overall, the American Kestrel vocalizations are essential for communication within their species, helping to maintain authorities' strength in pair bounds and warn others of the potential dangers.
07:39Overall, the American Kestrel vocalizations are essential for communication within their species, helping to maintain authorities' strength in pair bounds and warn others of the potential dangers.
08:09Overall, the American Kestrel vocalizations are essential for communication within their species, helping to maintain authorities' strength in pair bounds and warn others of the potential dangers.
08:29Overall, the American Kestrel vocalizations are essential for communication within their species, helping to maintain authorities' strength in pair bounds and warn others of the potential dangers.
08:49Overall, the American Kestrel vocalizations are essential for communication within their species, helping to maintain authorities' strength in pair bounds and warn others of the potential dangers.
09:19Overall, the American Kestrel vocalizations are essential for communication within their species, helping to maintain authorities' strength in pair bounds and warn others of the potential dangers.
09:49Overall, the American Kestrel vocalizations are essential for communication within their species, helping to maintain authorities' strength in pair bounds and warn others of the potential dangers.
10:19Overall, the American Kestrel vocalizations are essential for communication within their species, helping to maintain authorities' strength in pair bounds and warn others of the potential dangers.
10:39American Kestrels have a fairly limited set of calls, but the most common one is loud, excited series of three to six kli or kili notes, lasting just over a second. It's distinctive and an excellent way to find these birds.
10:57You may also hear two other common calls—a long whine that can last one to two minutes, heard in birds that are courting or feeding fledging, and a fast chitter, usually used by both sexes in friendly interaction. The kli call is usually delivered as a rapid series of kli, kli, kli.
11:17When the Kestrel is upset or excited, this call is used in a wide variety of situations and is heard from both sexes, but the large females typically have lower-pitched voices than the male. The whine call is primarily associated with feeding but is also uttered during copulations.
11:35The chitter is also used in activities that involve interactions between male and female birds, including courtship feeding, copulations, and the feeding of nestlings. Nestling can produce calls similar to those of adults at 16 years old.

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