Catharacta maccormicki 11:55 A strange shrew lands 25' from nest 206 - R-y flies over at once, grabs stranger who at once flies off. 11:57 RTH, 230 flies to fight 100 gbs west on cover. 12:06 p. 362 begins food begging. I interrupt by whistling so I can get my camera ready. Also interrupted by other shrew + announce. They don't resume. One goes 6 feet S + starts choking. Another bird with a TH band sitting few feet S of these flies at once + closest bird. TH then sits. 12:07 Plot thickens. Seems to be a pr located at 362 + the single male content banded above (31??) The choking bird above etc. One of another pair walks over, sitting bird in bill down display - test elevated. Bill is way down + neck brought forward & like so. Pretense!! Bird stands still in the pose starts announcement singing. Head puts full announcement on. A complicated exchange flowed. One pair fought, One bird driven aside other 3 in triangle announcing. One pecked at head of 3rd. Separated with 2 pr sitting 3 feet apart. 12:15. One P above pr in 362 I believe they seem to prefer one particular rock pile to sit near.