BIRD 745 BIRD 



Outline and Questions on Birds Continued 



What instinct brings the carrier pigeon back home even when it has been sent 

 away by train? 



How fast do birds fly? 



How do birds and mankind differ in their method of producing sounds? 



Do birds talk to one another? , 



Are the same number of eggs laid at each sitting? 



How do the newly-hatched birds of the lower orders differ from those of the 

 higher orders? 



How do baby birds learn to fly? 



Why can birds digest their food without chewing it? 



In what respect are the birds an aid to agriculture? 



What services does mankind owe the birds? 



How ancient is the custom of keeping birds in cages? 



Would you choose a grain-eating bird for a pet, or one that feeds on insects? 

 Why? 



What are the principal classes into which birds are divided? 



Why do some birds build elaborate nests, and others such crude ones? 



What birds dig tunnels for nesting places? 



How are the eggs of the mound-bird hatched? 



What sort of cement does the robin use to hold its nest together? 



What bird travels 16,000 miles a year? 



What are the chief reasons for the periodical flights of birds? 



What is the usual order of arrangement when a flock of birds flies off in a pro- 

 cession? 



Do the birds travel at the same rate in the spring and fall flights? 



What determine the "trunk lines" followed by migrating birds? 



Why do governments set apart reservations for birds? 



When birds molt do their feathers drop off all at once? 



Do they shed all of their feathers? 



What proof is there that the sense of hearing in birds is acute? 



What senses do they use in seeking out their food? 



Why do birds eat during most of their waking hours? 



How can wild birds be tamed? 



What sort of clothing should one wear on a bird-study excursion? 



If you should find a bird with a broken wing what ought you to do? 



What bird never builds a nest of its own? 



Do mated birds remain together season after season? 



Are birds the only creatures that fly? Do all birds fly? 



Where do their largest and strongest feathers grow? 



Do birds return to their last-year's nests? 



How many miles can a carrier pigeon fly in an hour? 



How does the manner in which feathers grow on a bird differ from the manner 

 in which hair grows on a dog, for instance? 



What peculiarity of birds is indicated in the lines "Robert of Lincoln is gayly 

 drest" and "Robert of Lincoln's Quaker wife, pretty and quiet, with plain brown 

 wings"? 



What difference is there between the manner in which a bird produces its song 

 and the manner in which a human being speaks? 



What difference is noticeable between the young of the lower orders of birds and 

 those of the more highly developed orders? 



jg 



