The Oologists' Record, March i, 1922. 17 



OOLOGICAL RESEARCH FORM. 



Original notes and observations made by 



of 



regarding the 



Copyright. 



Locality or localities 



Is it resident, a summer visitor or a winter visitor ? 



Is it gregarious ? How abundant ? 



Type of country it frequents Altitude 



It s chief food ; 



How man}' nests have come under your observation and form the 

 basis of information now given ? 



Do they rear 2 broods in a season? If so, on what 



evidence ? 



Breeding period : Earliest date of laying 



Latest date of laying Average date of laying 



Usual site of nest ■ 



If above ground — height 



Description of nest : — 



Shape 



Materials used 



External diameter inches. Internal diameter inches. 



Depth of cup, if any, ..inches. Diameter of entrance, if an}', 



inches. 



Most usual number of eggs in a clutch 



Maximum number Minimum number 



At what intervals does the bird lay ? hours. 



Eggs :— 



Average dimensions* of eggs = x 



My smallest egg is x and my largest x 



Shape Texture Weight 



Colour (describe, if possible, b}' comparison with some other 

 well-known egg, if it resembles any other). 



Signature 



Date completed 



or date of last observation recorded herein. 



* Dimensions of eggs should be in millimetres wherever possible. 



This form is issued by the Oologists' Record, and published by 

 Haxrison and Sons, Ltd., 45, St. Martin's Lane, London, W.C. 2. 



Note. — It is impossible to show here the space provided for 

 the variojs items. The forms will be foolscap in size and spaced 

 out to the best advantage. 



