482 Dr. A. L. Thomson : T^esults of a Stud^j of [Ibis, 



TABLE I. 



Numbers of Birds Marked and Recovered. 



Species. 



Total numbers 

 marked. 



Song-Thrush 



Lapwing . 



Blackbird 



Starling 



Common Tern 



Redbreast 



Swallow 



Black-headed Gull 



House-Sparrow 



Greenfinch 



Hedge- Sparrow 



Chaffinch 



Blue Titmouse 



Willow-Warbler . . . 



Herring-Gull 



Mallard 



Wren 



Red Grouse 



Partridge 



Mistle- Thrush 



Sky-Lark 



Pied Wagtail 



Spotted Flycatcher 



Yellowhammer 



House- Martin 



Linnet 



Great Titmouse 



Woodcock 



Meadow-Pipit 



Wheatear 



Wood-Pigeon 



Whitethroat .". 



Common Gull 



Sand-Martin 



Moorhen 



Ringed Plover 



Grey Wagtail 



Oystercatcher 



Total numbers 

 of Reappear- 

 ance Records. 



Percentage of 



Reappearance 



Records. 



3,770 



3,142 



2,641 



1,900 



1,352 



1,206 



1,198 



1,150 



1,041 



1,021 



898 



811 



653 



501 



461 



425 



274 



265 



256 



230 



228 



217 



203 



193 



183 



176 



172 



156 



150 



146 



132 



130 



102 



92 



88 



85 



84 



79 



* In the species marked thus the proportion of recoveries must be 

 regarded as abnormally " inflated " owing to special activities 

 on the part of the markers : the remark applies to a lesser 

 extent in certain other cases. 



