The telephone name to my place of job was once a regular one for mid- to past due June: Canada ducks had been inflicting an issue. There was once an excessive amount of poop, they usually had been consuming some plants. The previous was once all too commonplace, however the latter section was once moderately new, and the site was once a first-time grievance. So, I discovered myself riding to the caller’s space to analyze and communicate with the house owner.
On the time, in 2006, I used to be the waterfowl biologist for the Nebraska Sport and Parks Fee, and my process tasks integrated responding to calls like this and discovering an acceptable resolution.
After I were given there, the house owner’s grievance intensified. With out query, she sought after the ducks long past – straight away and entirely. I listened after which went to test the valuables and the ducks. Her husband got here at the side of me, and once we went a bit of techniques from the home, he stated, in a hushed tone, “I like the geese. They could stay here as far as I’m concerned.”
And there it was once – without equal dichotomy about what to do with nuisance Canada ducks. A husband and spouse weren’t even in settlement.
Since recovery efforts within the Nineteen Sixties higher Canada ducks populations, those birds have turn out to be commonplace in Denver neighborhoods.
Andy Move/The Denver Publish by way of Getty Pictures
Confrontation about what to do with city – and infrequently nonurban – Canada ducks is conventional. That’s specifically true in puts like Colorado and different states the place the Canada goose inhabitants has flourished since being reintroduced beginning within the Nineteen Sixties.
Canada ducks is also a nuisance, however their control calls for collaboration between neighborhood individuals and flora and fauna managers. The answers ceaselessly require persistence and patience. I lately am a professor of flora and fauna control on the College of Nebraska-Lincoln. Whilst I don’t deal at once with nuisance animals anymore, I infrequently paintings to search out new regulate strategies or supply details about animal populations and their control.
Canada goose reintroduction
As with different populations of flora and fauna across the flip of the 20 th century, unregulated searching decimated Canada goose populations. The Migratory Chook Treaty Act of 1918 stored the Canada goose, in addition to masses of different chicken species, by way of hanging limits on which and when migratory birds may well be hunted or taken. The act applied a 1916 conservation treaty signed between the U.S. and the UK (on behalf of Canada).
Starting within the Nineteen Sixties, maximum U.S. state and Canadian provincial flora and fauna companies set their points of interest on restoring Canada goose populations. Searching was once limited and even prohibited in positive spaces. Captive flocks had been established, and Canada ducks had been reintroduced again into local spaces by way of transplanting ducks from the ones captive or current flocks. The trouble persevered into the Eighties, leading to one of the vital a success flora and fauna recovery systems of the 20 th century.
In Colorado, recovery efforts had been very similar to different states. Natural world managers used a couple of remnant populations within the state because the supply to begin native populations somewhere else.
In consequence, Canada goose populations flourished. For Canada goose populations which are in or go back and forth to Colorado, surveys estimated lower than 100,000 of the birds in Colorado 40 years in the past. As of 2025, on the other hand, there are over 700,000 birds.
Ducks within the town
As it’s so commonplace now to look them in city settings, it can be moderately tough to imagine that recovery efforts didn’t purposely reintroduce or transplant ducks into city environments. The ducks merely moved into those towns, together with Denver.
Waterfowl biologists concerned within the recovery efforts most likely had little inkling of the adaptability of Canada ducks to city spaces. In addition they most likely had no concept that some or maximum would no longer migrate within the fall. It was once extensively assumed that ice- and snow-covered meals would inspire the birds to transport south. There most likely was once little attention and no implementation of systems to show migration pathways to younger birds launched in numerous recovery efforts, as would naturally be executed by way of their folks. In some chicken recovery systems, biologists use ultralight airplane to coach younger birds on migration corridors and wintering spaces.
As city spaces grew in Colorado, extra ponds and lakes supplied unfrozen water, some aided by way of fountains. Right through spring and summer season, those self same ponds and lakes supplied superb nesting and gosling-rearing spaces. Meals may well be acquired a brief flight away on the nearest agricultural fields. Excellent-natured souls will have additionally fed them – even supposing mavens advise in opposition to it.
City ponds and lakes supply a constant water supply for ducks all through the 12 months.
Chris Boswell/iStock by way of Getty Pictures Plus
I additionally suspect that waterfowl biologists all the way through the recovery and translocation technology idea that populations may well be managed by way of searching. Searching was once, and nonetheless is, a majority supply of mortality for Canada ducks. Alternatively, as soon as the birds had been established in city spaces, publicity to searching very much diminished they usually weren’t harvested on the identical charges as rural ducks, since searching isn’t allowed in city spaces.
Additional, there aren’t many predators of grownup Canada ducks or their nests in city spaces. Relating to herbal variety mechanisms to conquer, rack up every other couple of wins for city ducks.
Goose control
Huge ducks populations result in court cases. Nuisance court cases about ducks are usually the similar throughout states, with their poop being the commonest. Water high quality and degradation of lawns or golfing classes also are commonplace. In additional rural spaces, plants may also be ate up by way of ducks. In any case, in some circumstances, there are human well being and protection considerations, reminiscent of airplane moves and assaults on folks.
The place probably the most war of words concerning the ducks comes into play is with the strategies used to regulate populations. Not unusual techniques come with hazing and scaring. Canines, specifically, seem to be efficient in scaring ducks. Habitat adjustments, reminiscent of turning off water fountains all the way through the wintry weather or making islands out there to people so ducks don’t get too relaxed, might also paintings.
An excessive manner is culling. This comes to gathering and euthanizing the birds, which Denver did in 2024. Regardless of fixing the issue successfully and straight away, controversy abounds with this system.
Denver has used plenty of tips on how to lower its goose inhabitants, together with using faux coyotes, in line with a 9News file.
In Nebraska, the Sport and Parks Fee, in live performance with U.S. Fish and Natural world Carrier pointers, initiated an egg-oiling program. It’s a allow device that permits folks with nesting ducks to coat the goose eggs with corn oil to forestall them from hatching.
However in most cases it takes more than one techniques to resolve or scale back the nuisance ducks drawback. Answers infrequently come in a single day and patience is essential – ducks can tolerate numerous harassment if they want a useful resource reminiscent of water or meals.
If ducks come to discuss with your home, believe it a possibility to look at their good looks and power shut up. And if you make a decision they actually have to move, be affected person with the flora and fauna managers who’re looking to assist. They, too, are a treasure.
