Wild About Birds - Illinois Shrikes and Vireos!

Kingdom: Animalia - Animals are multicellular organisms that rely on other organisms for nourishment. There cells do not have cell walls. Most animals are capable of movement at least in some portion of their life cycle. Reproduction is generally sexual, but in some animals asexual reproduction may be utilized at certain times.
Phylum: Chordata - The Phylum Chordata contains the vertebrate animals. Mammals, birds, reptiles, amphibians and fishes are included in this phylum. These animals have a notochord at some point in their development. They have a tubular nerve cord along the back. Gill slits and a tail are present at some point in their life cycle. They have an internal skeleton.
Class: Aves - Birds are the only organisms with feathers. They are endotherms, maintaining a nearly constant body temperature. They have a hard bill but no teeth. A gizzard, which functions to grind food, is present in the digestive tract. Fertilization is internal. A nest is built in which the hard-shelled eggs are deposited and incubated.
Order: Passeriformes - These are birds with adaptations for holding on to thin twigs or stems. Three of the toes on each foot face forward and one backward to help it grasp and balance on small branches.

Family: Laniidae (Shrikes) - The shrikes have a hook on the tip of the bill. These birds behave a little like hawks. They prey on uinsects, small birds and mice. The prey items are imapled on throns or barbed wire.

     loggerhead shrike (Lanius ludovicianus) [state endangered]
     northern shrike (Lanius borealis)

Family: Vireonidae (Vireos) - Vireos are small, olive- or gray-backed birds. Many have wing bars and eye rings or no wing bars and eye stripes.
     white-eyed vireo (Vireo griseus)
     Bell’s vireo (Vireo bellii)
     yellow-throated vireo (Vireo flavifrons)
     blue-headed vireo (Vireo solitarius)
     Philadelphia vireo (Vireo philadelphicus)
     warbling vireo (Vireo gilvus)
     red-eyed vireo (Vireo olivaceus)