Page 30 - World of Animals - Issue #31
P. 30

American robin      Japanese quail
                                                      3cm (L), 2.1cm(W)   3cm (L), 2cm (W)
                                                     Scientists aren’t really sure   If these eggs have a vivid
                                                      why these eye-catching   pattern, the female will lay
                                                      eggs are so blue, but it’s   them at a site that matches
                                                      thought that male robins   their darker colour, but if it
                                                      make better parents the   is weak, she will tuck them
                                                       brighter the eggs are.    somewhere more neutral.


                                                                                       ALL
                                                                                     ACTUAL
                      Malleefowl                                                       SIZE
                     7cm (L), 4.5cm (W)
              These eggs are buried beneath a mound of soil.
             Once they are ready to hatch, the chicks must lie on
              their backs and dig their way out with their feet.
                                                                                                          Common loon
                                                                                                          8.9cm (L), 5.7cm (W)
                                                                                                      The dark brown colour of this large egg
                                                                                                      blends perfectly with the nest, which is
                                                                                                       made from twigs and matted grass.
                                             Extraordinary

                                                              eggs



                   Northern jacana
                     3cm (L), 2.3cm (W)                  Eggs come in all shapes,
                These eggs are laid in flimsy nests that

                float on lakes. If they do fall in, there’s no   sizes, and colours, but their

                harm done, as the eggs are waterproof.
                                                       structure is about more than
                                                      just aesthetics. Here are some
                                                       of the world’s most amazing                             Kestrel
                                                       eggs and their extraordinary                        3.8cm (L), 2.8cm (W)
                                                                                                        These eggs are laid in the disused nests
                                                                adaptations                            of crows or le  balanced on the ledges of

             Hummingbird       House wren                                                                   cliffs and tall buildings.

             1.4cm (L), 0.8cm (W)  1.7cm (L), 1.3cm (W)
            Because of their small size,   Temperature is critical
           hummingbirds lay some of the   for these eggs. A burst
            tiniest eggs in the world, in a   of sunlight can overheat
             nest the size of a walnut.   them and kill the chicks.

                                                                    Emu
                                                                14cm (L), 9cm (W)
                                                        One emu egg is the equivalent in size to 12 chicken
                                                        eggs. Emus lay some of the largest eggs in the world,
                                                                second only to ostriches.







            © The Art Agency/Sandra Doyle      Mistle thrush              Common cuckoo




                       Osprey
                                                                           2.2cm (L), 1.6cm (W)
                                                                                                           6.7cm (L), 3.8cm (W)
                   6.2cm (L), 4.5cm (W)       3cm (L), 2.2cm (W)    The cunning cuckoo creeps into other nests to lay   Blue guillemot
                                               The pale blue colour

                 When these eggs are laid, the nest is   may help to camouflage   its eggs and then sneaks away. The shells mimic   These eggs are specially designed for the high life.
                built up to stop them rolling out. A er   these eggs by imitating   the colour of the host’s eggs, so other birds are   The unusual conical shape prevents them from rolling

           30    hatching, the nest becomes wider.   dappled sunlight.  tricked into accepting them as their own.  off the cliffs where they are laid.


       030_Eggs-traordianry_.indd   30                                                                                       02/03/2016   12:43
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