Page 27 - World of Animals - Issue #31
P. 27

Nearest
                                 “In normal flight, a                 Environmental factors                   neighbours
                                                                     Ruby-throated hummingbirds are not currently
                                hummingbird’s tiny                   threatened but that doesn’t mean life is without danger  The ruby-throated hummingbird
                           wings beat around 53                                 Agricultural growth       shares its landscape with many
                                                                                The conversion of land to agricultural
                                                                                                          other creatures
                                                                                land can threaten the hummingbird’s
                                  times per second”                             food source through loss of
                                                                                wildflowers, a valuable source of
                                                                                food and nutrition.
                                                                                Deforestation
                                                                                The felling of forests and the
                                                                                widespread clearing of trees could
                                                                                result in the hummingbird species
                                                                                losing vital nesting sites and
                                                                                foraging ground.
                                                                                Herbicides
                                                                                The mechanisms aren’t fully
                                                                                understood but it has been observed
                                                                                that hummingbird occurrences are
                                                                                lower in areas where herbicides are   Bumblebees
                                                                                commonly used.            Bumblebees are important pollinators
                                                                                                          and can visit thousands of flowers
                                                                                Predation                 per day. Their sole purpose is to
                                                                                Hummingbirds may be susceptible   find nectar, and in the process they
                                                                                to predation from domestic cats.   transfer pollen between plants.
                                                                                This could be a concern for the
                                                                                future, particularly as the number of
                                                                                domestic cats is on the rise.










                                                                                                          Praying mantis
                                                                                                          Praying mantises are found in many
                                                                                                          gardens across the US and to some
                                                                                                          people’s surprise, there have been
                                                                                                          reports of praying mantises capturing,
                                                                                                          killing, and eating hummingbirds aŽer
                                                                                                          lying in wait on hummingbird feeders.












                                                                                                          Orb weaver
                                                                                                          As hummingbirds are insectivorous  © Corbis; FLPA; Getty; Thinkstock; The Art Agency/Peter Scott; U.S. Fish and Wildlife Service Headquarters; Geoff Gallice; Joe Schneid; Robert Flogaus-Faust; Katja Schulz; Louise Docker; Kevin Cole
                                                                                                          they will consume spiders, but they
                                                                                                          have other uses for them, too. Ruby-
                                                                                                          throated hummingbirds have been
                                                                                                          known to use orb weavers’ silk to
                                                                                                          construct their walnut-sized nests.












                                                                                                          American bullfrog
                                                                                                          Bullfrogs are found throughout much
                                                                                                          of the hummingbird’s range. They are
                                                                                                          easy to spot and are typically green
                                                                                                          with brown spots. They are nocturnal
                                                                                                          and will spend their nights on the
                                                                                                          lookout for a meal of insects and mice.

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       018-027_AA_Hummingbird.indd   27                                                                                      02/03/2016   12:37
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