Page 19 - Complete Birds of Britain and Europe (DK - RSPB)
P. 19

NESTS AND EGGS

        NEST SITES FOR ALL PURPOSES
        Most nests are vulnerable to predators, which may
        eat the eggs, chicks, and sometimes even the adult
        that is within the nest. Even wooden nestboxes may
        be raided by woodpeckers. So birds think about the
        safest place to locate their nests. Small birds tend to
        hide their nests away in thick bushes, or suspend   TUNNELLING
        them beneath the long branches of conifers. Many   INTO SAND
                                          Sand Martins dig a metre
        species nest inside holes that they either stumble  into a solid earth or soft
        across or excavate themselves in trees or earth banks.  sandstone cliff with their feet.
        Larger species may rely on inaccessibility and make  The inner end of the tunnel then
                 large nests of sticks in plain sight at   broadens out into a nest chamber
                   the tops of trees.     that will house four or five chicks.









        NO NEST                     PLASTERWORK
        The Little Ringed Plover makes a shallow scrape in sand for  The Nuthatch uses a woodpecker’s hole or
        its eggs, giving it little or no lining. When disturbed, the bird  a natural hole in a tree. It plasters the entrance
        runs off and relies on the eggs’ camouflage pattern to save  with mud to get a perfect fit – just big enough
        them. While hawks and eagles make large nests, falcons  for it to squeeze inside – which should
        never do: they lay their eggs straight onto a bare ledge.  protect the nest from predators.
                                    TREE HOLE
                                    Woodpeckers, such as this Lesser
                                    Spotted Woodpecker, excavate holes
                                    in living trees, using their chisel-like bills.
                                    The nest chamber is left unlined apart
                                    from a few chippings.














                                    FLOATING NEST
                                    Black-necked Grebes build floating
                                     heaps of weed that are anchored
                                       to the bottom. If they have to
                                         leave the site, they cover their
          NESTING ON BUILDINGS            eggs with a few scraps of
          White Storks have long nested on buildings,  weed in order to hide
          especially on church towers, although   them from predators.  COMPLEX STRUCTURE
          some still use trees. In parts of Europe they  The Long-tailed Tit’s nest is a masterpiece
          use telegraph poles. In Spain, poles with    of spiders’ webs, moss, lichens, and
          cartwheels are provided specially for them.  feathers. It is hard to see, and stretches
                                                       as the chicks grow bigger.

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