File Details
- Depositor
- Karen Dykes
- Date Uploaded
- 2021-12-08
- Date Modified
- 2021-12-08
- Fixity Check
- passed on August 08, 2024 at 14:06
- Characterization
-
Height: 1891
Width: 2375
File Format: tiff (Tagged Image File Format)
File Size: 13491864
Filename: pp_043.tif
Last Modified: 2024-08-09T00:50:00.320Z
Original Checksum: aff87ae5be02aff252a04ca4a5a387aa
Mime Type: image/tiff
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| Transcript |
- July 14 [line crossed out]
Had tea with the [David] Lacks +
enjoyed talking with him about
his new research program which
includes the use of highly sensitive
radar for the study of bird
migration over the north sea.
They can follow the birds for 100
miles under favourable conditions
+ chart altitude, direction + speed.
It is found that there are migrants
night + day, that they rise over water
or by day up to 4000 [+/-] ft [feet] except larks which fly lower over water
Fly a predetermined direction
apparently for a given period +
then frequently alter course
to a second predetermined direction.
[David] Lack sees evidence that if a tail
wind carries them beyond the
normal point before they alter
course they are then out of their
normal flyway. He does not believe
Williamsons suggestion that birds
lost fly down wind. They
get lost when they cannot use the
sun or stars. They then fly
aimlessly and get blown down
wind.
at Oxford = Golden Cross Inn, Cornmarket
good + not too expensive.
July 14/58. [1958] Oxford.
Took Joyce to the hairdresser +
then went to the E.G.I. where
I met [David] Lack + some of the young
men there. Went to the university
museum + climbed the swift tower.
About 40 pairs are nesting in the
boxes. The research is terminated except
for a long range attempt to bring
some nests up to 4 young. This
year now have been able to raise
more than 3.
Went to the department + met
[Nikolaas] Tinbergen + [Alister] Hardy. Tinbergens group
are working on: a) The patterns of behaviour
in sticklebacks raised without one or the
other parent or in complete isolation.
No differences have shown up from the
norm. b) The courtship + mating behaviour
of different species + types of Drosophila [underlined].
Single males and females are introduced to
a plastic cell + placed under a
microscope + all actions talked onto
a recorder at 1 sec [second] intervals. The
actions are then diagrammed after
many replications. Ripe males (3 deep)
are confronted with ripe + unripe [female symbol]'s
+ vice versa + the critical behaviour
studied - Already one unifactorial
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