Sept., 1918 



NOTES ON THE NESTING OF THE MOUNTAIN PLOVER 



163 



The accompanying photograph by Mr. Figgins (sec figure 32) is of the 

 four sets taken in 1917. There is some variation, of course, in the ground color 

 of the eggs; but such difference is fully as noticeable in eggs of the same set as 

 between those of different sets. 



The following color description (Ridgway's Color Standards used) and 

 measurements are by Mr. Lincoln, Curator of Ornithology, Colorado Museum 

 of Natural History. Ground color, olive buff to dark olive buff or light yel- 



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4 3 2 1 



Fig. 32. Four sets, of three eggs each, of Mountain Plover. Sets are numbered, by 



VERTICAL ROW OF EGGS, AS REFERRED TO IN TEXT. 



iowish olive, heavily spotted with blackish brown intermixed with smaller and 

 paler spots, somewhat confluent on the larger end, varying in individual cases. 



MEASUREMENTS IN INCHES OF EGGS OF MOUNTAIN PLOVER 



Set no. 1 

 1.45x1.11 

 1.47x1.10 

 1.47x1.11 



Set no. 2 

 1.48x1.10 

 1.45x1.12 

 1.49x1.13 



Set no. 3 

 1.43x1.10 

 1.51x1.11 

 1.49x1.14 



Set no. 4 

 1.55x1.13 

 1.50x1.13 

 1.49x1.13 



Denver, Colorado, Meirch 1, 1918. 



