384 OBSERVATION OUTLINE 



3. Form Koosts (dates, number of birds in roost, dis- 



tance birds go to roost). 

 Winter roosts (ex. Crow). 

 Summer roosts (ex. Robin). 

 Migration roosts (ex. Swallows). 



4. Perform curious Actions. 

 Dances (ex. Prairie Hen). 

 Aerial evolutions (ex. Nightbawk). 



V. Nest (in colonies, ex. Swallows — or alone, ex. 

 Thrushes). 



1. Location of Xest. 



In or on tbe ground (exs. Bank Swallows and Oven- 

 bird). 



In tree-trunks (ex. Woodpeckers). 



On branches. 

 In crotch. 



On horizontal limb (ex. Kobiu). 

 Pendent from branch (exs. Orioles and Vireos). 



2. Size of Nest (exs. Hummingbird, Robin, and Crow), 



3. Form of Nest. 



Cup -shaped (ex. Robin). 

 Pocket-shaped (ex. Oriole). 

 Basket-shaped (ex. Vireo). 

 Wall-pocket-shaped (ex. Swift). 

 Dome-shaped (ex. Oven-bird). 

 Retort-shaped (ex. Cliff Swallow). 



4. Materials of Nest. 

 Clay (ex. Eave Swallow). 



Vegetable fibres, grasses, rootlets, leaves, twigs (ex. 



Sparrows). 

 Hair (ex. Hairbird, or Chipping Sparrow). 

 Fur or feathers (ex. Chickadee). 



5. Length of Time Nest is used. 

 Abandoned after first brood (ex. Vireos). 

 Used for successive years (ex. Fish Hawk), 



