[cobirds] ID (by sound) help please

In a grassy field in Longmont heard an unfamiliar call.
fairly high pitched, 6-10 single notes evenly spaced in about 3 seconds (so pretty quick), slightly descending (perhaps a 3rd interval)
the bird must have been in a tuft of grass
I heard it very close, sounded like within 8 ft so I moved slowly to try to see it and in a minute or so it sounded about 8 ft further ahead, repeated with same result
so the sound is such that the location is deceiving and/or the bird moves very, very slyly

Ron Bolton
Berthoud CO

--
You received this message because you are subscribed to the Google Groups "Colorado Birds" group.
To view this discussion on the web visit https://groups.google.com/d/msg/cobirds/-/6uH41A4meO4J.
To post to this group, send email to cobirds@googlegroups.com.
To unsubscribe from this group, send email to cobirds+unsubscribe@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/cobirds?hl=en.