For example , oystercatchers are unusual in being able to break through the shells of mussels ; adult oystercatchers suffer intraspecific kleptoparasitism from juveniles that are not yet strong or skillful enough to open mussels easily .
Animals that have extraordinarily specialized feeding methods are often targets of kleptoparasitism .
Oystercatchers are unusual in being able to break through the shells of mussels ; adult oystercatchers suffer intraspecific kleptoparasitism from juveniles that are not yet strong or skillful enough to open mussels easily .
Animals that have extraordinarily specialized feeding methods are often targets of kleptoparasitism .