34 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 '11. 



6. Black-crowned Night Heron (Nyc- 



ticorax nycticorax ncevius), rare. 



