Company lists · Data refreshed September 2026

Top 25 Bird protection organizations worldwide

Name: Bird protection organizations worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 534 companies tracked

RevenueBase identified 534 bird protection organizations worldwide as of September 2026 and tracks 9,646 professional contacts across them, including 2,892 with verified work emails. The United States is the largest market and New York the largest hub.

This list covers bird protection organizations worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026. Country and city lists for bird protection organizations follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

534Companies

9,646Contacts tracked

2,892Verified emails

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The 25 largest bird protection organizations worldwide

Ranked by team size

Top 25 of 534 bird protection organizations worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to bird protection organizations: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	National Audubon Society	Partial evidence	New York, NY, United StatesHQ checked Sep 19, 2026	501-1,000	900 contacts →
	Partial evidence “The National Audubon Society protects birds and the places they need, today and tomorrow, throughout the Americas using science, advocacy, education, and on-the-ground…” Source: RevenueBase Database · checked Sep 19, 2026
2	National Wildlife Federation	Indirect evidence	Reston, VA, United StatesHQ checked Sep 19, 2026	201-500	585 contacts →
	Indirect evidence “As America's largest non-profit conservation organization, the National Wildlife Federation works closely with those who span the social and political spectrum, but who are…” Source: RevenueBase Database · checked Sep 19, 2026
3	Birdlife International	Partial evidence	Cambridge, United KingdomHQ checked Sep 19, 2026	51-200	330 contacts →
	Partial evidence “We’re BirdLife International, the only global Partnership conserving birds and all life on our planet.” Source: RevenueBase Database · checked Sep 19, 2026
4	Center For Biological Diversity	Indirect evidence	Tucson, AZ, United StatesHQ checked Sep 19, 2026	51-200	219 contacts →
	Indirect evidence “At the Center for Biological Diversity, we believe that the welfare of human beings is deeply linked to nature, to the existence in our world of a vast diversity of wild animals…” Source: RevenueBase Database · checked Sep 19, 2026
5	Defenders Of Wildlife	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	51-200	202 contacts →
	Partial evidence “Defenders of Wildlife is dedicated to the protection of all native animals and plants in their natural communities.” Source: RevenueBase Database · checked Sep 19, 2026
6	Vogelbescherming Nederland	Indirect evidence	Zeist, NetherlandsHQ checked Sep 19, 2026	51-200	162 contacts →
	Indirect evidence “Vogelbescherming Nederland komt op voor in het wild levende vogels en hun leefgebieden.” Source: RevenueBase Database · checked Sep 19, 2026
7	Point Blue Conservation Science	Partial evidence	Petaluma, CA, United StatesHQ checked Sep 19, 2026	51-200	160 contacts →
	Partial evidence “Point Blue Conservation Science (Point Blue) is dedicated to conserving birds, other wildlife, and ecosystems through innovative scientific research, restoration, outreach and…” Source: RevenueBase Database · checked Sep 19, 2026
8	Birdlife Australia	Partial evidence	Carlton, AustraliaHQ checked Sep 19, 2026	51-200	140 contacts →
	Partial evidence “BirdLife Australia is Australia’s largest bird conservation organisation and is dedicated to stopping bird extinctions.” Source: RevenueBase Database · checked Sep 19, 2026
9	American Bird Conservancy	Partial evidence	The Plains, VA, United StatesHQ checked Sep 19, 2026	51-200	120 contacts →
	Partial evidence “American Bird Conservancy (ABC) takes bold action to conserve wild birds and their habitats throughout the Americas.” Source: RevenueBase Database · checked Sep 19, 2026
10	SEO Birdlife	Indirect evidence	Madrid, SpainHQ checked Sep 19, 2026	51-200	109 contacts →
	Indirect evidence “SEO/BirdLife (Sociedad Española de Ornitología) está orientada a cumplir la función social que nos mueve desde 1954: estudiar y conservar las aves y la naturaleza y divulgar sus…” Source: RevenueBase Database · checked Sep 19, 2026
11	Birds Canada	Partial evidence	Port Rowan, ON, CanadaHQ checked Sep 19, 2026	51-200	104 contacts →
	Partial evidence “Birds Canada is a national charitable organization dedicated to bird conservation.” Source: RevenueBase Database · checked Sep 19, 2026
12	Swiss Ornithological Institute	Indirect evidence	Sempach, SwitzerlandHQ checked Sep 19, 2026	51-200	101 contacts →
	Indirect evidence “The Swiss Ornithological Institute in Sempach is a non-profit foundation supported by the public.” Source: RevenueBase Database · checked Sep 19, 2026
13	Parque DAS Aves	Partial evidence	Foz Do Iguaçu, BrazilHQ checked Sep 19, 2026	201-500	98 contacts →
	Partial evidence “Parque das Aves is the only institution in the world focused on the conservation of the beautiful and exuberant birds of the Atlantic Rainforest, offering an up-close, immersive…” Source: RevenueBase Database · checked Sep 19, 2026
14	Sovon Vogelonderzoek Nederland	Indirect evidence	Nijmegen, NetherlandsHQ checked Sep 19, 2026	51-200	91 contacts →
	Indirect evidence “Sovon Vogelonderzoek Nederland organiseert landelijke vogeltellingen en voert onderzoek uit ten behoeve van beheer, beleid en wetenschap.” Source: RevenueBase Database · checked Sep 19, 2026
15	National Aviary	Partial evidence	Pittsburgh, PA, United StatesHQ checked Sep 19, 2026	51-200	88 contacts →
	Partial evidence “The National Aviary is America’s only independent indoor nonprofit zoo dedicated exclusively to birds.” Source: RevenueBase Database · checked Sep 19, 2026
16	Manomet Conservation Sciences	Partial evidence	Manomet, MA, United StatesHQ checked Sep 19, 2026	11-50	71 contacts →
	Partial evidence “Manomet is a science-driven conservation organization with deep roots in bird banding.” Source: RevenueBase Database · checked Sep 19, 2026
17	WWF Poland	Indirect evidence	Ochota, PolandHQ checked Sep 19, 2026	51-200	71 contacts →
	Indirect evidence “WWF's mission is to stop the degradation of our planet's natural environment, and build a future in which humans live in harmony with nature.” Source: RevenueBase Database · checked Sep 19, 2026
18	Bird Conservancy Of The Rockies	Partial evidence	Fort Collins, CO, United StatesHQ checked Sep 19, 2026	51-200	70 contacts →
	Partial evidence “Connecting people, birds, and land Mission: conserving birds and their habitats through science, education, and land stewardship Bird Conservancy of the Rockies conserves birds…” Source: RevenueBase Database · checked Sep 19, 2026
19	Aves Argentinas	Indirect evidence	Caba, IndiaHQ checked Sep 19, 2026	11-50	66 contacts →
	Indirect evidence “Aves Argentinas es la organización nacional, miembro de BirdLife International, que con más de 100 años de trabajo junto a vos, protege las aves silvestres y la naturaleza de…” Source: RevenueBase Database · checked Sep 19, 2026
20	Environment For The Americas	Partial evidence	Boulder, CO, United StatesHQ checked Sep 19, 2026	11-50	64 contacts →
	Partial evidence “Environment for the Americas works to connect people to birds and nature through education, outreach, and research.” Source: RevenueBase Database · checked Sep 19, 2026
21	SPEA	Indirect evidence	Lisbon, PortugalHQ checked Sep 19, 2026	51-200	62 contacts →
	Indirect evidence “Somos uma associação sem fins lucrativos que trabalha pela defesa do nosso património natural, tendo como principal alvo as aves e os seus habitats.” Source: RevenueBase Database · checked Sep 19, 2026
22	Bird Alliance Of Oregon	Partial evidence	Portland, OR, United StatesHQ checked Sep 19, 2026	51-200	59 contacts →
	Partial evidence “Oregon wouldn’t be Oregon without Bird Alliance.” Source: RevenueBase Database · checked Sep 19, 2026
23	The Peregrine Fund	Partial evidence	Boise, ID, United StatesHQ checked Sep 19, 2026	51-200	58 contacts →
	Partial evidence “For over 50 years, The Peregrine Fund has worked to conserve birds of prey.” Source: RevenueBase Database · checked Sep 19, 2026
24	Wildlife Conservation Society-India	Indirect evidence	Bengaluru, IndiaHQ checked Sep 19, 2026	51-200	49 contacts →
	Indirect evidence “WCS-India works for conservation of wildlife and wild places by applying rigorous science to what we do, and in partnering with the government.” Source: RevenueBase Database · checked Sep 19, 2026
25	Stiftelsen Nordens ARK	Indirect evidence	Hunnebostrand, SwedenHQ checked Sep 19, 2026	51-200	47 contacts →
	Indirect evidence “På Nordens Ark brinner vi.” Source: RevenueBase Database · checked Sep 19, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: bird protection organizations. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names bird protection organizations.
Partial evidence: Its own public description names part of bird protection organizations, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name bird protection organizations. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 534 bird protection organizations worldwide

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Bird protection organizations worldwide at a glance

As of Sep 19, 2026

30.0%Verified-email coverage

18.1Average contacts per company

1-10Median size (employees)

0.9%Largest-city concentration · New York

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

321

11-50

156

51-200

201-500

501-1,000

1,001-5,000

Email recency is reported on each country list linked below.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among bird protection organizations, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for bird protection organizations are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “bird protection organizations”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names bird protection organizations), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among bird protection organizations, and records with no verified work email.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 2,892 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 19, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Bird protection organizations by location

1 lists · largest first

Every Bird protection organizations list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Bird protection organizations based in the United States253

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names bird protection organizations, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many bird protection organizations are there worldwide?

RevenueBase identified 534 bird protection organizations worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

National Audubon Society, headquartered in New York, tops this list with the largest team on record.

Which country has the most bird protection organizations?

The United States leads with 253 companies. Every bird protection organizations list by country and city is linked on this page.

Which city has the most bird protection organizations?

New York leads with 5 headquartered companies, followed by Amsterdam (3) and Cleveland (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 2,892 verified decision-maker contacts tracked across these 534 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.