Part 4

3:05-1/2 E. obsoletus moves from cool end to middle, partly in sunshine.

3:07 E. obsoletus adjusts its position in narrow middle strip of shadow just off the cold end.

3:08 Boards used for shading adjusted back slightly so that E. obsoletus is in sunshine.

3:08-1/2 E. obsoletus moves back to cold end.

3:10 Young still at middle, but resting mainly over cooled metal with tail partly in sunshine.

3:10-1/2 Young moves out into sunshine at middle.

3:11 Female moves out into sunshine at middle. E. obsoletus moves over cooled metal to its edge, coming to rest partly in sunshine.

3:12 Female moves back over cooled metal.

3:13-1/2 Air temperature 33.3 deg.C. E. obsoletus shifts a short distance so that it is resting entirely over the cooled metal, with only part of its tail receiving sunshine.

3:17 Young moves about in sunshine, then comes to rest in shadow with half its body over cooled metal.

3:19 Young shifts so that more than half its body is in sunlight in middle section.

3:20 Young shifts away from sunlight, coming to rest with most of its body over the cooled metal.

3:21-1/2 Female moves from cooled metal to sunshine in middle strip.

3:23 Female moves out of sunshine, partly over edge of cooled metal.

3:30 Young moves off cooled metal, coming to rest over edge of warmed metal in narrow middle strip that is in shadow.

3:30-1/2 Young moves back away from warmed metal, pauses briefly, and then moves over cooled metal coming to rest there.

3:31 Female shifts so that about half her body is in sunshine in the middle.

3:32 Female shifts back into shadow, partly over cooled metal.

3:33 Boards providing shade readjusted so that female is in sunshine.

3:33-1/2 Female moves back into shadow over cooled metal.

3:38 Female moves to edge of cooled metal, resting partly in sunshine; sky is becoming slightly overcast.

3:40 Temperature of female 33.4 deg.C.

3:41 Temperature of young 32.8 deg.C.

3:43 Temperature of E. obsoletus 32.4 deg.C.

3:45 Young moves to shaded edge of warmed metal. Finds a dead spider dropped there and eats it.

3:47 Temperature of female 32.3 deg.C.

3:48 Temperature of young 36.4 deg.C.

3:50 Temperature of E. obsoletus 33.8 deg.C.