NOT FOR PUBLICATION FILED

UNITED STATES COURT OF APPEALS JAN 10 2025

MOLLY C. DWYER, CLERK

U.S. COURT OF APPEALS

FOR THE NINTH CIRCUIT

CENTER FOR BIOLOGICAL No. 23-3026 DIVERSITY, a non-profit organization, D.C. No. 4:22-cv-00286-JGZ Plaintiff - Appellant,

v. MEMORANDUM*

UNITED STATES FISH & WILDLIFE

SERVICE; DEBRA HAALAND, in her official capacity as Secretary of the Interior,

Defendants - Appellees.

Appeal from the United States District Court for the District of Arizona Jennifer G. Zipps, Chief District Judge, Presiding

Argued and Submitted November 8, 2024 Phoenix, Arizona

Before: PAEZ and OWENS, Circuit Judges, and SEEBORG, Chief District Judge.**

* This disposition is not appropriate for publication and is not precedent except as provided by Ninth Circuit Rule 36-3. ** The Honorable Richard Seeborg, Chief United States District Judge for the Northern District of California, sitting by designation. Plaintiff Center for Biological Diversity (“CBD”) appeals the district court’s

order granting summary judgment for Defendants United States Fish and Wildlife

Service and Debra Haaland (collectively, “the Service”), in which the district court

concluded that the Service acted reasonably in determining that listing the Tucson

shovel-nosed snake as an endangered species is not warranted. See Ctr. for

Biological Diversity v. United States Fish & Wildlife Serv., No. 22-cv-00286, 2023

WL 5432315, at *1 (D. Ariz. Aug. 23, 2023). “We review the district court’s grant

of summary judgment de novo and must determine whether the Service’s decision

was ‘arbitrary, capricious, an abuse of discretion, or otherwise not in accordance

with law.’” Ctr. for Biological Diversity v. Haaland, 998 F.3d 1061, 1067 (9th

Cir. 2021) (quoting 5 U.S.C. § 706(2)). We have jurisdiction under 28 U.S.C.

§ 1291, and we affirm.

The Administrative Procedure Act (APA) governs review of an agency’s

compliance with the Endangered Species Act (ESA), 16 U.S.C. §§ 1531-1544

(1994). Greater Yellowstone Coal., Inc. v. Servheen, 665 F.3d 1015, 1023 (9th

Cir. 2011) (citing Native Ecosystems Council v. Dombeck, 304 F.3d 886, 901 (9th

Cir. 2002)). “Agency action should be affirmed ‘so long as the agency considered

the relevant factors and articulated a rational connection between the facts found

and the choices made.’” Audubon Soc’y of Portland v. Haaland, 40 F.4th 967, 979

(9th Cir. 2022) (quoting Alaska Oil & Gas Ass’n v. Pritzker, 840 F.3d 671, 675

2 23-3026 (9th Cir. 2022)). We apply the standards in 50 C.F.R. § 424.14(h)(1) in reviewing

the propriety of the service’s decision not to list the Tucson shovel-nosed snake

subspecies as endangered.

This case concerns the CBD’s second attempt to protect the Tucson shovel-

nosed snake; it first petitioned the Service to list the subspecies as endangered in

2004. After reviewing that petition, the Service determined that listing the snake

as endangered was warranted but that higher priority actions precluded doing so.

Although it agreed to add the snake to its candidate species list, the Service

highlighted that “uncertainty exists in both the taxonomic entity and subspecies

range of [Tucson shovel-nosed snakes]” and called for additional work “to clarify

the validity and distribution of the subspecies.” 12-Month Finding on a Petition to

List the Tucson Shovel-Nosed Snake (Chionactis occipitalis klauberi) as

Threatened or Endangered with Critical Habitat, 75 Fed. Reg. 16,050, 16,052

(March 31, 2010).

A subsequent study by the United States Geological Service (USGS)—aptly

titled “Fuzzy Boundaries”—determined that Tucson shovel-nosed snakes and

Colorado shovel-nosed snakes were not genetically exclusive; some that lacked the

Tucson “look” nevertheless had the related genes, and vice versa. Based on this

data, the study suggested taxonomically dividing western shovel-nosed snakes into

two species using “previously reported color pattern variation along with the

3 23-3026 genetic variation,” and dividing one of those species into the Colorado and Tucson

subspecies “in keeping with the genetic structure that was recovered across

Arizona.”

In light of the Fuzzy Boundaries study, the Service defined the Tucson

shovel-nosed snake’s range by genetic data rather than phenotypic indicators, such

as color patterns. In its 2014 Species Status Assessment (“SSA”), the Service cited

peer-reviewed research that explained how relying on color pattern variation to

define subspecies in snakes “often results in confusion when trying to ascribe

taxonomic differences to visually distinct, but genetically homogenous,

populations.” The Service relied on the data from the Fuzzy Boundaries report to

determine that the snake “occupies a much larger range than previously believed,”

including areas where it intergrades with the Colorado shovel-nosed snake.

Because “development is focused in a small portion of the subspecies’ range” once

properly understood to include the intergrade zones, the SSA concluded that

habitat loss was not likely to imperil the snake’s survival. On the basis of this

information, the Service concluded that an endangered listing was unwarranted.

In 2020, CBD filed a second petition to list the Tucson shovel-nosed snake

as endangered, arguing that the Service mistakenly interpreted the USGS study to

expand the snake’s range, “wrongly includ[ing] snakes that shared some genetic

characteristics with [the Tucson shovel-nosed snake] but do not have the

4 23-3026 phenotypic characteristics.” Upon reviewing the 2020 petition, the Service

determined that listing the Tucson shovel-nosed snake as endangered was still

unwarranted.

The district court concluded that the Service acted reasonably, and we agree.

CBD argues otherwise, first contending that the Service dismissed its second

petition merely because it presented a different interpretation of the Fuzzy

Boundaries data. This framing is incorrect. The Service dismissed the petition,

not due to its distinct interpretation of preexisting data, but because that

interpretation did not provide “new information not previously considered.” 50

C.F.R. § 424.14(h)(1)(iii). As the district court rightly recognized, the documents

underlying CBD’s second petition rested on the outdated view that “the

consideration of color pattern was necessary in defining subspecies populations”

and failed to “address[] the reasoning in the SSA underlying [the Service’s] 2014

decision to rely on genetic data” instead. Ctr. for Biological Diversity, 2023 WL

5432315, at *7. The petition thus “d[id] not present substantial scientific and

commercial information indicating that the petitioned action may be warranted.”

Endangered and Threatened Wildlife and Plants; 90-Day Findings for Five

Species, 86 Fed. Reg. 53,937, 53,941 (Sept. 29, 2021).

Second, CBD contends that the agency failed to explain why those

documents or the other bases for its petition—i.e., news about interstate

5 23-3026 construction and generic disease—did not amount to substantial scientific or

commercial information indicating that listing the snake as endangered may be

warranted. The Service’s regulations state that “conclusions drawn in the petition

without the support of credible scientific or commercial information will not be

considered ‘substantial information.’” 50 C.F.R. § 424.14(h)(1)(i). Although the

Service acknowledged that CBD’s information about interstate construction was,

technically speaking, new, the agency supported its determination that the

construction is not likely to affect significantly the snake’s survival as a subspecies

with the explanation that the interstate affects only a small segment of the species’

range. That analysis, rooted in its prior identification of the snake’s much-larger-

than-previously-recognized range, is not unreasonable simply because it rejected

CBD’s preferred alternative. To the contrary, the decision to issue a not-warranted

finding in 2020 flowed directly from the 2014 research suggesting that the snake is

best distinguished by genetics at the subspecies level, which in turn requires

construing its range based on records of genetically, rather than physically, similar

snakes. Evidence of CBD’s disagreement with that approach does not amount to

new, credible scientific information “such that a reasonable person conducting an

impartial scientific review would conclude that the action proposed in the petition

may be warranted.” 50 C.F.R. § 424.14(h)(1)(i).

6 23-3026 As for the new information about fungal disease, the Service concluded that

it represented a “generic potential threat of fungal infections” and was unspecific

to Tucson shovel-nosed snakes. Reports that birds get the flu, without more,

would not necessarily mean listing the pigeon as endangered may be warranted.

For these reasons, the Service’s determination was not arbitrary, capricious, an

abuse of discretion, or otherwise not in accordance with law.

The district court judgment is AFFIRMED.

7 23-3026