 There are three types of foraging behaviour observed in the common starling . " Probing " involves the bird plunging its beak into the ground randomly and repetitively until an insect has been found , and is often accompanied by bill gaping where the bird opens its beak in the soil to enlarge a hole . This behaviour , first described by Konrad Lorenz and given the German term zirkeln , is also used to create and widen holes in plastic garbage bags . It takes time for young common starlings to perfect this technique , and because of this the diet of young birds will often contain fewer insects . " Hawking " is the capture of flying insects directly from the air , and " lunging " is the less common technique of striking forward to catch a moving invertebrate on the ground . Earthworms are caught by pulling from soil . Common starlings that have periods without access to food , or have a reduction in the hours of light available for feeding , compensate by increasing their body mass by the deposition of fat . 
 <a href='dey_it' title='1'><mark>There</mark></a> are three types of foraging behaviour observed in the common starling . " Probing " <a href='uninflect' title='2'><mark>involves</mark></a> the bird plunging its beak into the ground randomly and repetitively until an insect <a href='been_done' title='3'><mark>has</mark></a> been found , and is often accompanied by bill gaping where the bird <a href='uninflect' title='4'><mark>opens</mark></a> its beak in the soil to enlarge a hole . This behaviour , first described by Konrad Lorenz and given the German term zirkeln , is also used to create and widen holes in plastic garbage bags . It <a href='uninflect' title='5'><mark>takes</mark></a> time for young common starlings to perfect this technique , and because of this the diet of young birds will often contain fewer insects . " Hawking " <a href='drop_aux' title='6'><mark>is</mark></a>the capture of flying insects directly from the air , and " lunging " <a href='drop_aux' title='7'><mark>is</mark></a>the less common technique of striking forward to catch a moving invertebrate on the ground . Earthworms are caught by pulling from soil . Common starlings <a href='null_relcl' title='8'><mark>that</mark></a><a href='got' title='9'><mark>have</mark></a> periods without access to food , or <a href='got' title='10'><mark>have</mark></a> a reduction in the hours of light available for feeding , compensate by increasing their body mass by the deposition of fat . 
It is three types of foraging behaviour observed in the common starling . " Probing " involve da bird plunging its beak into tdaground randomly and repetitively until an insect done been found , and is often accompanied by bill gaping where the bird open its beak in the soil to enlarge a hole . dis behaviour , first described by Konrad Lorenz and given thdaerman term zirkeln , is also used to create and widen holes in plastic garbage bags . It take time fir young common starlings to perfect this technique , and cause of this the diet of young birds will often contain fewer roaches . " Hawking " the capture of flying insects directly from thedar , and " lunging " the das common technique of striking forward to catch a movin invertebrate on the gdand . Earthworms are caught by pulling from soil . Common starlings got periods without access to food , or got a reduction in the hrdaf light available for feedin , compensate by increasing their body mass by the deposition of fat .