Bird mortality

release of a liquid petroleum hydrocarbon into the environment, especially marine areas, due to human activity

alt=Shark entangled in a net on board a fishing vessel|thumb|A finetooth shark (Carcharhinus isodon) caught as bycatch by a fishing vessel Bycatch (or by-catch), in the fishing industry, is a fish or other marine species that is caught unintentionally while fishing for specific species or sizes of wildlife. Bycatch is either the wrong species, the wrong sex, or is undersized or juveniles of the target species. The term "bycatch" is also sometimes used for untargeted catch in other forms of animal harvesting or collecting. Non-marine species (freshwater fish not saltwater fish) that are caught

collision between an airborne animal (usually a bird or bat) and a human-made vehicle (usually an aircraft)

thumb|American kestrel eating bird. An avivore is a specialized predator of birds, with birds making up a large proportion of its diet. Such bird-eating animals come from a range of groups.

mine

type of environmental effect

practice of hunting waterfowl for food and sport

Celtic celebration held on 26 December, St. Stephen's Day

problem in urban areas