Intra- and Interspecific Territorialism in Mixed Colonies of the Canada Goose Branta canadensis and the Greylag Goose Anser anse
![Wild geese and ducks and a family of animals in the park in spring on a lush meadow with daisies. Castle Park in Essen Borbeck in the Ruhr area Stock Photo - Wild geese and ducks and a family of animals in the park in spring on a lush meadow with daisies. Castle Park in Essen Borbeck in the Ruhr area Stock Photo -](https://c8.alamy.com/comp/2G0W30X/wild-geese-and-ducks-and-a-family-of-animals-in-the-park-in-spring-on-a-lush-meadow-with-daisies-castle-park-in-essen-borbeck-in-the-ruhr-area-2G0W30X.jpg)
Wild geese and ducks and a family of animals in the park in spring on a lush meadow with daisies. Castle Park in Essen Borbeck in the Ruhr area Stock Photo -
![Wild geese and ducks and a family of animals in the park in spring on a lush meadow with daisies. Castle Park in Essen Borbeck in the Ruhr area Stock Photo - Wild geese and ducks and a family of animals in the park in spring on a lush meadow with daisies. Castle Park in Essen Borbeck in the Ruhr area Stock Photo -](https://c8.alamy.com/comp/2G0W35E/wild-geese-and-ducks-and-a-family-of-animals-in-the-park-in-spring-on-a-lush-meadow-with-daisies-castle-park-in-essen-borbeck-in-the-ruhr-area-2G0W35E.jpg)