302 VERTEBRATE ANIMALS. 
_ 
2. Dentirostres—The birds of this section are characterised 
by the fact that the upper mandible of the beak is notched or 
toothed on its lower margin near the tip (fig. 164, D). They all 
feed upon animal food, especially upon insects. In this section 
are the Shrikes (Lawzid@), the Fly-catchers (A7uscicapid@), the 
Thrushes (AZerulide), and the Warblers (Sy/véade). 
3. Lenutrostres.—In this section the beak is long and slender, 
gradually tapering to a point (fig. 164, E). The toes are gene- 
rally very long and slender, especially the hinder toe. Many 
live to a great extent upon vegetable juices, and amongst these 
* Fig. 164.—Insessores. A, Foot of Yellow Wagtail; B, Foot of Water Ouzel : ae 
Conirostral beak (Hawfinch) ; D, Dentirostral beak (Shrike) ; E, Tenuirostral 
beak (Humming-bird) ; F, Fissirostral beak (Swift). 
are some of the most fragile and brightly-coloured of all the 
birds. A great many, however, live upon insects, either par- 
tially or entirely, and some of these approach nearly to the 
Dentirostres i many of their characters. Amongst the more 
important groups included in this section are the Creepers 
(Certhide), the Honey-eaters (AZeliphagide),the Humming-birds 
(Trochilide), and the Hoopoes (Upupine). 
