zoologylover

Birds have high metabolic rates and require a large amount of energy for flight. Due to this energy consumption, they have a voracious appetite. Small birds have high metabolic rates and eat more food relatively their body weight than the large birds. For example, hummingbirds feed almost constantly during the day. But still cannot maintain high metabolic rate at night, hence, become torpid. Classification of birds based on food All the birds are grouped on the basis of their feeding habits. Birds are classified into two groups; Euryphagous These birds are omnivorous and feed almost everything which is available in season. But they have to compete with other omnivores having the same spectrum of food. Stenophagous These birds are specialist and feed very selectively. Their food basically has few species, and if some hazard like disease occurs in their prey, it proves very dangerous for them and most probably they become extinct. Bill and tongue modification Different...