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Quite a lot of bird song when I arrive. Much of it apparently furnariid and humming bird.
 
5:40. Come across thrush singing on top small tree open branch. Phrase after phrase with only brief pauses between. Each phrase usually consists of whistles followed by rattles. Huge amount of variation. One type phrase consists of 3 or 4 "Wheeeeooooo"s followed immediately by 2 or 3 [[squiggly underlined]]"Bm"s [[/underlined]]. Another type is:

"Whew whew heee hooo [[squiggly line]]

[[image: 4 lines at different heights]]

Unfortunately light was not good enough to identify species. [[underlined]] Looked [[/underlined]] as if it might be the Brown, but this is rather unlikely. The significant thing about this song is that abbreviated versions of it might be what I presumed were abbreviated [[underlined]] rufinucha [[/underlined]] song a few days ago. 

5:47. Dawn chorus greatly reduced in volume already. Doesn't sound as if many birds were breeding.

5:51. See single Firebelly perched on very exposed dead limb top of tree. 20 ft up. Going "Tseet tseet tseet tseet [[ragged line]] tseet tseet tseet [[ragged line]] tseet tseet [[ragged line]] tseet tseet tseet tseet tseet [[ragged line]]......." Bird looking from side to side, rapidly (more rapidly than it utters the "Tseet"s). [[ragged line]] represents a Diglossa or Altapetes like warbling twitter. Clear and high. "Tssst"s somewhat variable. Some or all have faint rattle undertone. Some are almost "Tsit"s Some of the later twitters have a more obvious structure [[bell-shaped curve]] [[bell-shaped curve]]