Feral pigeons gathering on a city building
Bird Control

Feral Pigeons, Public Health and Why Bird Netting Works Best on Buildings

Urban pigeon numbers keep rising, and droppings and feathers raise public-health concerns. It pays to net a building before birds settle in, not after.

Pigeon flocks are a public-health concern, and bird management on buildings matters more than ever

Feral pigeon numbers in Taiwanese cities keep growing — in parks, on campuses, on apartment blocks and office towers alike. Recent press coverage notes that beyond the mess they create, pigeon droppings and feathers may carry a range of pathogens, putting public health back in the spotlight.

What problems do pigeon flocks cause?

Infographic of common pigeon problems
Common problems: fouling, mess, blocked drainage and hygiene risk.

Reporting on the issue points to several recurring management problems:

  1. Facades, roofs, balconies and equipment fouled by droppings.
  2. Accumulated droppings driving up cleaning and maintenance costs.
  3. Blocked drainage outlets, gutters and plant.
  4. Feathers and droppings affecting environmental hygiene.
  5. Possible pathogens in droppings, so authorities advise against direct contact and recommend personal protection when cleaning.

For hospitals, schools, food plants, logistics centres, office towers and residential communities, reducing long-term roosting has become a real part of building maintenance.

Prevention beats clean-up

Many buildings only act once droppings have built up. But washing facades, removing droppings, repairing corroded equipment and disinfecting regularly all cost significant labour and money.

Putting suitable bird-control measures in place before pigeons establish a fixed roost is usually more efficient, and keeps later maintenance spend down.

Bird netting: protection and humane management

Common bird-netting mesh sizes
Common mesh sizes: 2.4 cm diamond (green) and 2 cm (grey).

Bird netting is one of the most common and well-proven solutions in building bird control. It is not designed to harm birds: it simply stops them entering or perching in a defined area, without affecting the use or appearance of the building — a humane measure that keeps working long term.

Typical installation locations include:

  1. Plant roofs
  2. School corridors
  3. Community courtyards
  4. Building light wells
  5. Balconies
  6. Skylight canopies
  7. Rain hoods
  8. Air-conditioning platforms
  9. Stairwells
  10. Car parks

Material, twine diameter and mesh size are specified per environment, balancing safety, appearance and durability.

Public-health background in this article draws on Yahoo News / UDN coverage of the feral pigeon problem in Taiwan.

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