78 NATURE'S CALENDAR 



April 24 



Old Sqiiazu Ducks. — Depart northward. 



Bitterns. — Arrive from South second week. 



G7rat Blue Herons. — Pass North second and 

 third weeks. 



Little Green Herons. — Arrive from South 

 third week. 



Night Herons. — Arrive from South second 

 week. 



Clapper Rails. — Arrive from South, 



Virginia Kails. — Arrive from South. 



Coots and Bay-birds. — Pass northward. 



Eagles. — Nesting irregularly, on cliffs and 

 trees. 



Dnck-haii<k. — Nests first week, on cliffs. 



Broad-toing. — Nests third week; trees. 



Pigeon Hawks. — Pass northward. 



Long-eared O20I. — Nests second^ week ; holes. 



Sa-iV-ivhet Owl. — Nests first week ; tree holes. 



Screech Oxvl. — Nests first week ; tree hole<. 



Kingfishers. — Arrive from South first week. 



Sapstickers. — Pass northward. 



Whippoorwills. — Arrive from South tliird 

 vireek. 



Chimney-sivifts. — Arrive from South third 

 week. 



Humming-birds. — Arrive from South fourtli 

 week. 



Kingbirds. — Arrive from South fourtli week. 



Chebec. — Arrives from South fourth week. 



Croiv. — Nests second week ; tall trees. 



Rusty Blackbirds. — Pass northward. 



Purple Grakle. — Nests fourth week. 

 Vesper Sparrows. — Arrive first week. 



Savanna Sparro7vs. — Arrive first- week. 

 Yellozo-winged, or Grasshopper SpaiTows — 

 Arrive second week. 



Sea-side Sparrows. — Arrive second week. 



