Grab your phone and sunscreen — nature is calling.

• Hundreds of North Texans are participating in the City Nature Challenge, which calls itself the largest community science biodiversity census in the world.

Why it matters: The four-day challenge, which ends Monday, is a wide-ranging group project on biodiversity, noting species in urban areas and documenting how they are responding to climate change and urban sprawl.

• In many instances, a single photo has helped scientists learn about a new or lesser-known species.

Flashback: The challenge started in 2016 as a competition between Los Angeles and San Francisco and now spans over 700 cities globally.

• The Dallas-Fort Worth metro placed fifth last year in the number of documented observations.

State of play: This year's challenge includes events across North Texas, where nature lovers can participate in a bioblitz together.

Case in point: North Texans documented over 4,300 species last year, including this photo of a Texas Micropirate in Arlington that could be the first known photograph of the species alive.

• "A lot of times, people think of nature as something you go away to get to. We go to these fantastic national parks, and those places are great, but there's also nature all around us," Nathan May, an educator at the Trinity River Audubon Center, tells Axios.

How it works: Download the iNaturalist app on your phone or go to this website to upload photos of wild organisms around you. "Wild means that it wasn't put there, and is not being taken care of by people," per the challenge's website.

• Take your photos by Monday and upload them by May 10. They will automatically be entered into the City Nature Challenge.

The bottom line: "All of this stuff is worth appreciating and worth protecting so that we can sustain the systems of life that sustain us," May says.

Submission tips

The Dallas Police Department has revised its immigration polices after Gov. Greg Abbott threatened to withhold millions of dollars from the city if it doesn't cooperate fully with ICE.

The big picture: The governor has also sparred with Austin and Houston over their restrictions on cooperation with ICE on certain arrests.

Catch up quick: DPD's immigration policies clash with the city's 2025 certification that it would "participate fully" with the U.S. Department of Homeland Security as a condition for receiving the state's public safety grants, Abbott said in a letter to Dallas Mayor Eric Johnson.

• Dallas is at risk of losing $32 million in grants for the 2026 fiscal year and a share of the region's $55 million public safety grants for the World Cup, Abbott said

Context: Dallas PD's general order says officers cannot stop people solely to determine their legal status or arrest them for not being legally authorized to live in the U.S.

• Officers also cannot prolong a person's detention to investigate their immigration status or for federal authorities to detain them.

The latest: Dallas city manager Kimberly Bizor Tolbert informed Abbott's office yesterday that DPD revised its general order to comply with state law regarding immigration enforcement ahead of a deadline yesterday to make changes.

• "Our officers will follow the law, and our updated policy will affirm that we will cooperate with federal authorities when required," Dallas police chief Daniel Comeaux said yesterday in a statement.
• Still, Dallas officers won't stop people solely to determine their immigration status, Comeaux said.

⏲️ Coppell-based The Container Store will renovate 98 stores to include items from Bed, Bath & Beyond amid a merger between the two companies. (DMN)

💰 The Texas comptroller's office has started notifying families about their acceptance to the state's school voucher program. The first batch of recipients, around 42,600 students, will receive notices by today, the office said. (KERA)

🎒 The Texas Education Agency's takeover of Lake Worth ISD is moving forward with a new superintendent and board of managers. (NBC5)

🎤 Coachella headliner Karol G will perform at AT&T Stadium on Oct. 15. (Culture Map)

The best way for your wallet to survive drinks on a patio season is to find good happy hours.

State of sip: This Greenville Avenue bar has happy hour from 3-6pm on weekdays. Order half-price appetizers and signature cocktails.

• HG has a great patio and rooftop bar.

What to expect: Healthy, but tasty, food and good cocktails.

What to order: Cucumber Smash — cucumber-infused vodka, lime, turbinado sugar and mint.

Where: HG Sply Co., in Dallas, Fort Worth and Trophy Club.

Cost: $14, or half off during happy hour.

Six-word review: Refreshing elixir tastes sweeter at half-price.

📭 Know a drink we should try? Hit reply and tell us.