Strnadi vs Caty

The aim of the citizen science project Dialects of Czech Yellowhammers (Nářečí českých strnadů) is to map the distribution of the dialects of the Yellowhammer in Czechia and thus to reveal what influences the stability of bird dialects in the landscape (and the evolution of animal culture in general). You can also become a citizen scientist filling in previously uncharted areas! Install the mobile app “Strnadi”, register to the project and record the song of the Yellowhammer anywhere in Czechia – whether in your neighbourhood or during trips to the countryside. Why do we record Yellowhammers? The Yellowhammer (Emberiza citrinella) is a bird with a simple but very interesting song. It seems that each individual in a particular population sings its own unique combination of phrases, but the final part of the song is shared among birds in a particular region: Yellowhammers have their own dialects. The original citizen science project Dialects of Czech Yellowhammers, which run between 2011-2016, revealed that Czechia is a country particularly rich in yellowhammer dialects. We have managed, with the aid of numerous volunteers, to map almost the entire territory of the country. This has made Czechia one of the best-studied regions in the world in terms of bird dialects. We have discovered several unusual local dialects that are different from the common ones known from other parts of Europe. Knowledge of the distribution of bird dialects allows us to investigate many general questions about animal culture: for example, how dialects originate and what maintains them, or how birds respond to changes in their environment. To answer some of these questions, however, it is necessary to collect repeatedly large amounts of data from the whole country, which is essentially impossible without public involvement. The Yellowhammer is an ideal species for research on bird dialects. Although it is declining in many places, it is still abundant in Czech landscape and its song is simple and easily recognisable. Moreover, Yellowhammers sing for a long time - from early spring to mid-summer. What are we interested in? Are the boundaries of yellowhammer dialects stable over time? If not, have they shifted due to recent changes in landscape use (e.g., the "bark beetle calamity" that led to loss of spruce monoculture forests in many regions)? Are the unique local dialects that we discovered ten years ago in several places in Czechia stable, or do they tend to spread or shrink? These are just some of the questions we are going to study.

Caty turns every walk into a cat-catching adventure. POINT & CATCH Spot a stray cat, open Caty, and tap. AI instantly identifies the breed, estimates age, notes coat color, and rolls a rarity — from Common tabby to Legendary find. BUILD YOUR CATYDEX Every catch is saved to your personal Catydex with its photo, breed details, and the exact spot where you found it. Mark your favorites and watch your collection grow, one cat at a time. HUNT RARE CATS Five rarity tiers — Common, Uncommon, Rare, Epic, and Legendary. The rarer the cat, the bigger the reward. Will you complete the dex? GROW & EVOLVE Feed breed candy to level up your cats, then evolve them from Kitten to Street Cat to Neighborhood Legend. Every evolution earns a new AI-written title. WEEKLY RACE A fresh leaderboard every Monday. Finish in the top 3 to win a trophy for your profile. MAP YOUR CATS See a map of every cat you've ever spotted. Revisit your favorite hotspots or explore new neighborhoods. RANK UP & EARN XP Earn XP for every catch and climb 13 ranks from Rookie to Catylord. Complete daily challenges, collect achievement badges, and keep your streak alive for bonus XP. DAILY CHALLENGES A fresh challenge every day — catch a tabby, find a rare breed, or beat the clock. Bonus XP awaits. Perfect for cat lovers, urban explorers, and anyone who's ever stopped to photograph a stray and wished they could remember the breed. ——— Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://catpoke-legal.brnktl.workers.dev/privacy