22-B-2018 Black-and-white Warbler

STATUS
Pending
HOW MANY OBSERVED?
1 male
DATE SIGHTING OCCURRED
DATE REPORT PREPARED
REPORTER
Roger Doucet
LOCALITY OF OBSERVATION
928 French Point Dr, about 35-30 feet below ridge down a steep hillside.
HABITAT WHERE THE BIRD WAS OBSERVED
brush, trees
SIGHTING DURATION, CONDITIONS, and EQUIPMENT USED
Sighted for approximately 10 seconds, then recorded calls for about about 5 minutes starting around 3 or 4 minutes after sighting.
DID YOU TAKE NOTES?
Yes, during the observation
DID YOU CONSULT A FIELD GUIDE OR OTHER REFERENCE WORK?
Yes, later the same day
WHICH GUIDE(S) OR REFERENCE(S): DID YOU CONSULT?
Sibley Bird 2nd Edition, BNA Website
DESCRIPTION OF THE BIRD(s)
Great side view through binoculars of male Black-and-white Warbler, then it turned around and got great front view. Had good look at eyebrow.
BEHAVIOR OF THE BIRD(s)
Walked on lower branch of tree.
HOW AND WHEN DID YOU POSITIVELY IDENTIFY THE BIRD, AND WHAT CLINCHED THE IDENTIFICATION FOR YOU?
Am very familiar with BAWW having lived in eastern Canada until I was 37 and have been a birder since I was a child.
HOW DID YOU ELIMINATE SIMILAR SPECIES? WHAT WERE THEY?
Not a Black-throated Gray Warbler because of shape of eyebrow and call. Also familiar with it having lived and birded in southern California for 24 years.
WHAT IS YOUR EXPERIENCE WITH THIS (AND SIMILAR) SPECIES?
Have seen both species many times.
DESCRIBE YOUR GENERAL BIRDING EXPERIENCE
Not an expert birder but most very experienced.
ADDITIONAL INFORMATION (If any)
I will submitting two audios. I recorded the calls using a voice recorder that doesn't have a USB connector. I then recorded them onto one that has a USB connector. The first audio is 6:29 long and contains the seven separate recordings that I did between approximately 9:18am and 9:27am on June 8th and the second contains only two recordings that I made between 9:21 and 9:23am. The first contains at least eight calls by the warbler starting at 1:20, 1:40, 2:10, 2:37, 3:00, 3:27, 4:02 and 4:46. Around the 5:00 mark, as I was walking down the embankment to get closer, I dislodged a round rock that rolled down towards where the warbler was and I never heard it again. The second audio contains at least 3 calls, one between 9 and 12 seconds, the second between 35 and 37 seconds, and the third between 58 and 60 seconds.
WERE PHOTO(S), VIDEO, AND/OR AUDIO OBTAINED FROM THIS SIGHTING?
Audio
SUPPORTING AUDIO