134 THE BIRDS OF 



Rare. 



Scarce. 



Irregular. 



1. Horned Grebe (Colymbus auritus), 



rare, one female seen in fall 1910. 



2. Mallard (Anas platyrhynchos), 



rare, flock of ten or more at Lake. 

 A few pairs liberated several 

 years ago. Breed annually. 



3. Canada Goose (Branta canadensis 



canadensis), rare, one seen De- 

 cember, 1909, migrant. 



4. Great Blue Heron (Ardea herodias 



herodias), rare, one pair every 

 summer for eight years at Ra- 

 vine Lake; young birds seen. 



5. Green Heron (Butorides virescens 



virescens), occasional in marshes. 

 Six at Ravine Lake, summers of 

 1910 and 'u. 



6. Black-crowned Night Heron (Nyc- 



ticorax nycticorax flavins), rare. 



