questionedithistorytranslationsWhich bird is a brood parasite?lesser spotted eagle108golden oriole93European roller77common cuckoo969Common cuckoo is the only brood parasite in Central Europe.Share and bring new players to the game!correct this questionNinjaireach: rather globalanimalsbirdsornitologyPhil Fiddymentwikipedia → Common cuckooOrnitology quizBirds quizAnimals quizHow do baby birds get oxygen inside their eggs?Oxygen comes in through pores in the shell. Directly under the shell, there is a small pocket of air. The microscopic pores on the egg surface allow the CO2 to escape and fresh air to get in, so a developing bird can breathe.What color is octopus blood?Blue. Both squids and octopuses have blue blood. They use an oxygen-carrying molecule in their blood called hemocyanin that contains copper. In cold conditions with low oxygen pressure, hemocyanin oxygen transportation is more efficient than hemoglobin oxygen transportation.Which animals are the most threatened by a prion disease?Sheep. Scrapie is infectious and incurable. Recent studies suggest prions may be spread through urine and persist in the environment for decades. Scrapie occurs in Europe and North America, but to date, Australia and New Zealand (both major sheep-producing countries) are scrapie-free.Which bird in the stork family is used in forensic science?Marabou stork. Marabou feathers are used to manufacture brushes to collect fingerprints.