California · Nonprofit
Madrone Audubon Society Inc
Madrone Audubon Society Inc (California) receives grants from 3 organizations whose IRS filings report $69,504 to it, the largest being NATIONAL AUDUBON SOCIETY INC ($59,369). 2 of them have funded it in more than one year.
- Revenue FY2024
- $0
- Funders on record
- 3
- Grants received
- $70k
- Net assets
- $0
What Madrone Audubon Society Inc does
Mission
The purpose and objective of Madrone Audubon Society, Inc. shall be to engage in any educational, scientific, investigative, literary, historical, philanthropic and charitable pursuits as may be part of the stated purposes of the National Audobon Society, of which this society shall function as a chapter.
As stated on its FY2024 Form 990-EZ.
Programs
Educational Programs; Breeding Bird Atlas Program; Christmas Bird Count; General membership meetings; junior Audubon program; nesting support for a large Santa Rosa Heron / Egret nesting site; contributions to conservation science / bird rescue organizations; outreach programs; Public Nature Walks; miscellaneous conservation programs.
Madrone Audubon Society includes the following program:Stewardship Task Force, located at Sea Ranch, CA, provides coastal stewardship through continuing research on nesting seabirds; educational walks, and educational articles.
Approximately 2800 copies of an educational / informational newsletter were distributed to members each month except July and August. The newsletter "Leaves" is edited by volunteers and printed by commercial printers.
The 3 programs described on its FY2023 Form 990-EZ.
The organization over time
Each line starts at 100 in 2017, so what you read is the shape rather than the size: 150 means half as much again as 2017, 50 means half. The number beside each label in the key is where it ended. The shaded band is where the middle 50% of its peers' revenue would sit, given their growth.
Balance sheet
Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2017 to 2018, from $182k to $167k (−8%).
How it's funded, over time
Each bar is one year's revenue split into where it came from, and every bar is the same height — these are shares, not amounts, so a year that raised twice as much looks the same size. Hover a bar for the split.
93% of Madrone Audubon Society Inc’s revenue is contributions — more donation-reliant than the typical peer (92% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 1 of the last 2 reported years ran a deficit.
Who funds it, year by year
2017 → 2023: the base broadened from 1 funder to 2 funders, grant income fell $7k → $5k.
2 of 3 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 15% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.
From the IRS filings of Madrone Audubon Society Inc’s funders (the co-funder graph). Association, not causation. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How concentrated its funding is
Madrone Audubon Society Inc leans on a few funders — its largest provides 85% of grant income and the top three 100%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder to its left
100% of the income these shares are computed over arrives through pass-through sponsors or from payers whose filings do not say what kind of payment it is. Concentration is still measured over all of it, because the money is real; what it does not support is a claim about how many institutions have chosen to fund Madrone Audubon Society Inc.
Largest funder’s share by year: 2017 100% · 2018 100% · 2019 100% · 2020 99% · 2021 99% · 2022 65% · 2023 100% — broadly stable.
“Effective funders” = inverse Herfindahl index (1 / Σ shareᵢ²) — the number of equal-sized funders that would give the same concentration. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Where its funders are
Madrone Audubon Society Inc draws 100% of its grant income from funders outside California, across 1 state in all.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $10k arriving through sponsors registered in 2 states is excluded from the map and the split above: a sponsor holds money on a donor’s behalf, so its registered address would place those dollars somewhere no donor need ever have been. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Against its field
Madrone Audubon Society Inc's revenue fell 100% between 2017 and 2024.
this organization peer median middle 50% of peers· 3,152 environment nonprofits under $100k, FY2024
Organizations like Madrone Audubon Society Inc
Organizations whose mission and program text most resemble this one, by semantic similarity over every organization in the US filings — the closest peers, and often the clearest route to shared or prospective funders.
In California
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Public support
0%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Footprint & structure
Files a return copy in 1 state
Screen this organization
A dated, signed PDF of the compliance screen for Madrone Audubon Society Inc: IRS status (Business Master File, Publication 78, auto-revocation), the OFAC sanctions lists, the Internal Revenue Bulletin, and California registration, with the Rev. Proc. 2018-32 §8.01 reliance elements stated element by element. Generated from the current files at the moment you download it.
Screens are triage, not determinations; a source that cannot be read reports not screened, never clear. Screen this nonprofit · How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds Madrone Audubon Society Inc?
- Madrone Audubon Society Inc (California) receives grants from 3 organizations whose IRS filings report $69,504 to it, the largest being NATIONAL AUDUBON SOCIETY INC ($59,369). 2 of them have funded it in more than one year.
- How many funders does Madrone Audubon Society Inc have?
- IRS filings report 3 organizations giving $69,504 in grants to Madrone Audubon Society Inc, 2 of which have funded it in more than one year.
- Who is the largest funder of Madrone Audubon Society Inc?
- NATIONAL AUDUBON SOCIETY INC is the largest funder on record, with $59,369 in grants. The full list of funders is on this page.
- How can an organization like Madrone Audubon Society Inc find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in California. The funding by cause and by state pages list the largest funders for a given area and how to approach them.
Play a game about who funds Madrone Audubon Society →
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2024 (financials across 2017–2024), and the filings of 3 funders that report grants to it. “On record” means captured in the filings we have parsed — a funder that does not e-file, or whose grant detail is not itemized, will not appear. Filings run roughly 12–24 months behind. Trends on this page end at FY2023, the last fiscal year that has finished arriving; later years are shown and marked, and move no figure. Data on this page was exported October 14, 2026. What this page cannot tell you · view filing