Mallard notes, v4295
Page 491
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
Transcription
Mallard E 67 Mayhew 1953 Experimental April 28 Egg No. R.H. Water Condition Remarks 96 75 0 soon ready to pip 98 75 0 small embryo 100 75 1 soon ready to pip 101 75 1 pipped too soon 105 85 1 pipped too soon 106 85 1 soon ready to pip 107 85 1 pipped (too soon?) 108 85 2 soon ready to pip 110 85 2 pipped too soon May 5 Today all unhatched eggs from the April 7 setting were broken & examined. The results are: Egg No. R.H. Water Condition Remarks 114 85 2 soon ready to pip. 115 85 2 pipped, yolk almost all gone. 116 85 2 pipped, yolk almost all gone. 121 75 2 died during last week. 122 75 2 pipped, yolk almost all gone. 124 65 1 died during last week. 130 40 1 died during last week. 131 40 1 died during last week. 133 40 2 soon ready to pip. May 11 The thermostat has been acting up since last Friday (May 8). It hasn't been shutting off when it was supposed to, with the result that the temperature in the first box (#1) at 40% relative humidity rose to 41°C. Therefore, all the eggs from April 14 & May 5 at that humidity are probably dead. The temperature rose