April in Berkeley. 



is placed would be a hopeless task, so 

 minute is its size and so perfectly does 

 it blend with the branch upon which it 

 is placed, but the anxiety of the birds 

 when their home is approached, or more 

 frequently their daring resentment, re- 

 veals its presence. Whenever the angry 

 buzz of one of these intrepid mites is 

 heard close at hand, it is safe to surmise 

 that the nest is not far off. Even then 

 it is not easy to discover it, but with 

 patience and quiet the owners may be 

 sufficiently reassured to go about their 

 business once more. Watch them 

 closely and the female will presently 

 be detected suddenly alighting upon 

 what appears to be nothing more than 

 a knob or excrescence on a branch. 



If you have the good fortune to have 

 discovered an unfinished nest, you may 

 observe the mother bird's methods of 

 work. She settles down upon it and 

 rounds it with her breast. Seemingly 

 with difficulty the head is raised and the 

 long, slender beak arranges here and 

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