Bird anatomy Birds have a four-chambered heart, in common with mammals, and some reptiles (mainly the crocodilia). This adaptation allows for an efficient nutrient and oxygen transport throughout the body, providing birds with energy to fly and maintain high levels of activity. A ruby-throated hummingbird's heart beats up to 1200 times per minute (about 20 beats per second). Many birds possess a muscular pouch along the esophagus called a crop. The crop functions to both soften food and regulate its flow through the system by storing it temporarily. The size and shape of the crop is quite variable among the birds. Members
Food waste in the United Kingdom survival of wild animals, birds and fish on this planet." To reduce the food waste produced (often unintentionally or unavoidably, due to lifestyle) by consumers, advisory campaigns and articles have put forward varying advice and suggestions. The following strategies: planning before food shopping, understanding food date labels and using leftovers in other meals, are universally agreed to be effective in preventing food waste. Planning, before food shopping, and knowing what purchases are necessary is among ways of reducing food waste; buy one, get one free (BOGOF) offers have been criticised for encouraging customers to purchase food items that are eventually