An estimation would be that we eat about 10 to 20 times what they eat. Hope that helps!
There is no set amount of food that all birds must eat in a single day. Bigger birds need more food than smaller birds.
To survive most birds must eat at least half their own weight in food each day.
Hi
So they can move & grow. Birds burn calories at a much faster rate than humans.
Birds need to consume lots and lots of food so it will have enough energy to fly. If it didn't consume enough food it would be too tired to fly
Buy food especially for smaller garden birds. the crows may not like the food as much. also food for garden birds is generally smaller , the crows will probably not spend time eatin tiny bits of food that won't fill them up!!!
Birds have there forelimbs modified into wings to fly. The chest muscles has to be very much stronger in birds to enable them to fly. To bear the force of flying, the sternum in birds has be relatively large as compared to human being.
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Realistically quite little. Hunting with falcons and hawks was a sport practiced by the upper classes. Hunting was a minor food source compared to farming and herding, and falconry in particular would catch only birds or other small animals. it was done as sport, not as a major source of food.
i dont know you will have to look at how much each bird is and add them all together and see how much they all are or just buy less than 7 birds because 7 birds cause alot of poop and mess
Yes, but not over females as much as for food
Most reptiles and insects eat far less compared to mammals and birds as they are much less active and use less energy to generate body heat.