69 



Myiochanes virens 

 Empidonax trailli alnorum 

 Empidonax minimus 

 Corvus brachyrhynchos 

 Molothrus ater 

 Icterus galhula 

 Quiscalus quiscula ceneus 

 Astragalinus tristis 

 Spizella passerina 

 Melospiza melodia 

 Zamelodia ludoviciana 

 Iridoprocne hicolor 

 Bombycilla cedrorum 

 Vireosylva olivacea 

 Vireosylva gilva 

 Lanivireo flavifrons 

 Dendroica cestiva 

 Setophaga ruticilla 

 Dumetella carolinensis 

 Penthestes atricapillus 

 Hylocichla fuscescens 

 Planesticus migratorius 

 Sialia sialis 



Wood Pewee 



Alder Flycatcher 



Least Flycatcher 



Crow 



Cowbird 



Baltimore Oriole 



Bronzed Grackle 



Goldfinch 



Chipping Sparrow 



Song Sparrow 



Rose-breasted Grosbeak 



Tree Swallow 



Cedar Waxwing 



Red-eyed Vireo 



Warbhng Vireo 



Yellow-throated Vireo 



Yellow Warbler 



Redstart 



Catbird 



Chickadee 



Veery 



Robin 



Bluebird 



This habitat furnishes little forage for the true marsh birds, 

 but a few that pass the winter find shelter in it. The Red- 

 wings take refuge here upon their first arrival in the spring, 

 and during both spring and fall it throngs with other migrants. 



VII. The Maple-elm Association. 



(Plate VI, fig. 2.) 



The maple-elm association forms the climax society in the 

 swamp. The silver maple and the black ash, which are the 

 first to gain a foothold, are followed by the sycamore, the 

 butternut, and finally the elm. The latter tree at present 

 makes up the greater part of the wooded area on the eastern 

 side of the marsh (Plate I). This association includes several 

 minor societies, which will not be considered here, and furnishes 



