jfAe Birds of Hillsborough. 2l 



Foi' the purposes of this paper all the available avifauiuil 

 records have been consulted and included, but the major part 

 has been compiled from the writer's notes since 1902. 



The subjoined list of the Birds of Hillsborough embraces 

 109 s})ecies (exclusive of those cited in square brackets whose 

 status is doubtful), of which 76 have been known to breed in the 

 district. In the course of a series of monthly notes from 1902 

 till 1918, the following shows the average numbers of bird species 

 actually observed by the writer in each month : — 



January, ... ... 45 species. 



February, ... ... 45-7 ,, 



March, ... ... 48-5 „ 



April, ... ... 52-9 



May, ... ... 58 ,, 



June, ... ... 55'6 •.,,- 



July, ... ... 56 „ - 



August, ... ... 52-1 ,„ ' 



September, ... ... 48'8 ,, 



October, ... ... 47 - '„" 



November, ... ... 46-2 ' ,, '- 



December, ... ... 47-6 ,, 



The yearly average being 74-69 ,, 

 Needless to state this list cannot be regarded as complete ; 

 for doubtless many casuals may have visited the district unnoted. 

 As an instance of this may be cited the observation of an Oystei- 

 catcher — a bird one would not expect here — and it was a mere 

 matter of luck that the writer in passing Munroe's Dam chanced 

 to see it. However, this paper may be taken as a basis to which 

 future workers in detailed ornithological distribution may add. 



The measurements of eggs cited are the greatest length and 

 greatest breadth of the egg and ar-e stated in millimetres. The 

 weights— in grammes — of full eggs are those of fresh eggs, it 

 being recognised that eggs lose some 15% in, weight during the 

 process of incubation. Measurements and weights are given only 

 for eggs taken in the district. 



