Daniel 🐅🏔1d ago
One month until #CityNatureChallenge!!
Show threadMicha Baum6d ago

@3sat Freue mich auf alle Lebewesen, die die kommenden warmen Monate nutzen, um schöne Dinge zu tun. Auf die bunten Käfer und die prächtigen Blütenpflanzen, die singenden Vögel und die flatternden Schmetterlinge, die sprießenden Pilze und die lachenden Menschen...

Besonders aber auf die City Nature Challenge in #Kiel, #Hamburg, #Koblenz, #Heidelberg, #Erlangen, #Berlin und 700 weiteren Städten weltweit, bei der Ende April all das zusammenkommt!
#CityNatureChallenge #citizenscience #stadtnatur

Show threadMicha BaumJan 7
@Natur Mir sind bei der #CityNatureChallenge in #Kiel Ende April 2 Carabus auratus über den Weg gelaufen (wortwörtlich). In Essen hab ich einen überfahrenen C granulatus auf dem Radweg gefunden... Also einzelne sind (noch) da.
Will das Problem damit keinesfalls kleinreden.
Daniel 🐅🏔Jan 1

After much ado, and eight months after the event itself, here it is. My City Nature Challenge 2025 recap!

It's long, but it turned out that even though the observations felt slow I still had a lot to learn and say from my first CNC in Oregon.

Glad to get it out before the new year, if just barely! Please enjoy 🙏🏻

https://daniel.observer/journal/city-nature-challenge-2025

#CityNatureChallenge #naturalist #iNaturalist #NatureWriting #NaturePhotography

City Nature Challenge 2025

My first City Nature Challenge in Wallowa County was all about discovery and learning lessons

daniel.observer
Daniel 🐅🏔Oct 3

Oh nice, the #CityNatureChallenge is moving to a two-week identification window next year!

Hopefully that means we get a little better results and some of these big cities that have been posting thousands of bogus observations can be sorted out a little better

Jon SullivanMay 7, 2025
Here's one of the 7 moth species new to my garden this #CityNatureChallenge. Big thanks to NZ moth expert Neville Hudson for identifying it. The four I saw in April are the 8th–11th observations of this species from Canterbury on #iNaturalist. It's a NZ endemic species described in 1901 from a specimen collected in Christchurch, so it's not new to the city. Its caterpillars are known to feed on flowers of Pseudognaphalium (a native daisy) and Vittadinia (an exotic daisy). Neither is uncommon.
Jon SullivanMay 7, 2025

Each #CityNatureChallenge (and season) I run 4 nights of moth lights at our house and photograph all moths. Here are some favourites from this year.

In total (from what I've so far uploaded) I've got 162 moth species from 2,587 observations in our garden in Ōtautahi-Christchurch, NZ. Each year I find new things. This City Nature Challenge I got 7 new species. #iNaturalist has a handy experimental tool for finding differences between two searches.

https://www.inaturalist.org/observations/compare?s=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%3D%3D

#mothodon #moths #nz

iNaturalist

iNaturalist
Show threadJon SullivanMay 6, 2025

I saw one of these river eel photos of mine, from the recent #CityNatureChallenge, on a big screen this evening. I hadn't looked at it closely before and I noticed that there's a small crustacean on the photo. It looks quite distinctive. I've now made it a separate observation on #iNaturalist to see if any crustacean loving folk can help to ID it so I can learn more.

https://inaturalist.nz/observations/278941766

#crustaceans #river

Amphipods (Order Amphipoda)

Amphipods from Christchurch Central City, Christchurch, New Zealand on April 27, 2025 at 05:11 PM by Jon Sullivan. I saw one of my river eel photos from the recent City Nature Challenge on a big screen this eveni...

iNaturalist NZ
Jon SullivanMay 6, 2025

I love this, from the global summary of the #CityNatureChallenge results:

> In just one day, 1 million observations were uploaded to iNaturalist (it took nearly 7 years to reach that number when iNaturalist first started!)

> More than 50,000 species were recorded in a single day — about 1 in every 40 known species on Earth!

Outstanding!

https://www.inaturalist.org/blog/111234-highlights-from-the-10th-annual-city-nature-challenge

#iNaturalist

Highlights from the 10th Annual City Nature Challenge!

The results are in! 102,945 people joined in and made 3,310,131 observations of more than 73,765 different species all around the world with help from 23,196+ identifiers! That’s amazing! A huge THANK YOU to everyone who helped out — whether you made observations, hosted an event, or helped identify species, we truly appreciate your efforts. Special thanks to the Natural History Museum of Los Angeles County, the California Academy of Sciences, and the many local organizers who brought the City Nature Challenge to more than 650 cities worldwide. Together, we broke records! Here are a few highlights from this year: For the first time ever, over 100,000 people took part! We passed 3 million observations during the challenge — compared to 2.4 million last year! In just one day, 1 million observations were uploaded to iNaturalist (it took nearly 7 years to reach that number when iNaturalist first started!) More than 50,000 species were recorded in a single day — about 1 in every 40 ...

iNaturalist
Show threadJon SullivanMay 5, 2025

@rai Sweet! We’re one observer under our 2024 record so that’s a great effort.

The tallies are coming through, and, WOW. Globally, almost 100,000 people in the participating #CityNatureChallenge cities over just 4-days made over *3.1 million observations* of *72,300 species*. Those numbers are so big it’s just silly. Too epic!

I’m super pleased to have been part of Aotearoa-NZ’s contribution of 61,593 observations of 4,615 species.

https://inaturalist.org/projects/city-nature-challenge-2025
https://inaturalist.nz/projects/city-nature-challenge-2025-aotearoa-new-zealand
#iNaturalist

City Nature Challenge 2025

Join in the 2025 City Nature Challenge! Make observations of wild plants and animals 25-28 April, and take part in one of the largest community science events in the world while helping us better understand – and therefore, take care of – nature that lives in and around urban areas. Not in a participating city? No problem! Join our Global Project to have your observations count for the CNC no matter where you are. And consider signing up as an organizer for the 2026 CNC so your city can be an official CNC city! Not all cities use iNaturalist for the City Nature Challenge; you can find the full list of cities and their preferred platforms on the City Nature Challenge website.

iNaturalist