How the numbers of stray dogs - and feral pigeons - can be kept down kindly in urban areas. From street dogs to feral pigeons, many towns and cities are having to deal with exploding bird and animal populations which can pose risks to health and safety. This week we take a look at ways we can control numbers in an effective and humane way. We visit a special pigeon loft in Germany, where pigeon eggs are swapped with dummy eggs to help manage the population. And we take a walk with tourists in Mexico, who are helping to socialise stray dogs while also providing funds for their care.

People Fixing The World from the BBC is about brilliant solutions to the world's problems. We release a new edition every week for most of the year. We'd love you to let us know what you think and to hear about your own solutions. You can contact us on WhatsApp by messaging +44 8000 321721 or email [email protected]. And please leave us a review on your chosen podcast provider.

Presenter: Myra Anubi

(Image: Layla Kudri with a couple of street dogs on a hike in Mexico, BBC)