Sepulveda Basin
Banded but lighting and distance make it impossible to read band
Male and female on territory. Note pre-copulation behavior shown by the male in the 2nd - 4th photo consisting of tail fanning, head weaving and puffy plumage. Cool to see and capture.
Total of two male were present. I called this Vireo N since he was on the North side of the area where they were found. It was noticed that none of them crossed into other's territory. both were singing and making calls. No female was present around this time.
Total of two male were present. I called this Vireo S since he was on the South side of the area where they were found. It was noticed that none of them crossed into other's territory. both were singing and making calls. No female was present around this time.
a total of 3 specimens were observed. Two males chasing a female. Territory has been defined already by the two males, west side of the marsh belongs to one male and the east side to the other. Approximately length of the marsh is about an acre. Not yet very clear which couple will be nesting or on which side.