Minnesota Ornithologists Union

Hastings, MN
Tax exemption issued: Aug. 1952
EIN: 41-6039974

Type of Nonprofit

Designated as a 501(c)(3) Organizations for any of the following purposes: religious, educational, charitable, scientific, literary, testing for public safety, fostering national or international amateur sports competition (as long as it doesn't provide athletic facilities or equipment), or the prevention of cruelty to children or animals.

Category: Science and Technology Research Institutes, Services / Biological, Life Science Research (U53Z) (NTEE)

Donations to this organization are tax deductible.

Tax Filings by Year

Form 990 is an information return that most organizations claiming federal tax-exempt status must file yearly with the IRS. Nonprofit Explorer has IRS digitized Form 990 data for filings processed in 2012 and later. Duplicate download links may indicate a resubmission or amendment to this organization's original return. Organizations with gross receipts of less than $50,000 can file the form 990-N postcard filing, which doesn’t include financial details. All Form 990 data is from the IRS.

Fiscal Year Ending Oct.
2025

Revenue

$85,912

Expenses

$39,857

Net Income

$46,055

Net Assets

$478,355

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$42,437	49.4%
Program Services	$7,516	8.7%
Investment Income	$8,844	10.3%
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$0

Assets/Debt
Total Assets	$478,355
Total Liabilities	$0
Net Assets	$478,355

Compensation

Key Employees and Officers	Compensation	Other
Justin Watts (President)	$0	$0
Rob Daves (Vice-president)	$0	$0
Darcy Pinotti (Recording Secretary)	$0	$0
Cindy Thrury Smith (Membership Secretary)	$0	$0
Ann Kessen (Treasurer)	$0	$0
Anthony Hertzel (Publications Chair)	$0	$0
Gerald Hoekstra (Newsletter Editor)	$0	$0
Tom Tustison (Records Committee Chair)	$0	$0
Kristina Dexter-nienhaus (Grants Committee Chair)	$0	$0
Paul Budde (Communications Committee Chair)	$0	$0

+ View more people

990-EZ

Filed on Feb. 13, 2026

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending Oct.
2024

Revenue

$58,894

Expenses

$44,667

Net Income

$14,227

Net Assets

$399,450

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$16,714	28.4%
Program Services	$5,852	9.9%
Investment Income	$9,016	15.3%
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$0

Assets/Debt
Total Assets	$399,450
Total Liabilities	$0
Net Assets	$399,450

Compensation

Key Employees and Officers	Compensation	Other
Justin Watts (President)	$0	$0
Rob Daves (Vice-president)	$0	$0
Darcy Pinotti (Recording Secretary)	$0	$0
Cindy Thrury Smith (Membership Secretary)	$0	$0
Ann Kessen (Treasurer)	$0	$0
Anthony Hertzel (Publications Chair)	$0	$0
Gerald Hoekstra (Newsletter Editor)	$0	$0
Tom Tustison (Records Committee Chair)	$0	$0
Kristina Dexter-nienhaus (Grants Committee Chair)	$0	$0
David Cahlander (Communications Committee Chair)	$0	$0

+ View more people

990-EZ

Filed on March 11, 2025

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending Oct.
2023

Revenue

$49,746

Expenses

$45,521

Net Income

$4,225

Net Assets

$336,827

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$13,478	27.1%
Program Services	$5,649	11.4%
Investment Income	$6,009	12.1%
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$0

Assets/Debt
Total Assets	$336,827
Total Liabilities	$0
Net Assets	$336,827

Compensation

Key Employees and Officers	Compensation	Other
Michelle Terrell (President)	$0	$0
Justin Watts (Vice-president)	$0	$0
Kathrynne Baumtrog (Recording Secretary)	$0	$0
Cindy Thrury Smith (Membership Secretary)	$0	$0
Ann Kessen (Treasurer)	$0	$0
Anthony Hertzel (Publications Chair)	$0	$0
Gerald Hoekstra (Newsletter Editor)	$0	$0
Tom Tustison (Records Committee Chair)	$0	$0
Kristina Dexter-nienhaus (Grants Committee Chair)	$0	$0
David Cahlander (Communications Committee Chair)	$0	$0

+ View more people

990-EZ

Filed on Feb. 22, 2024

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending Oct.
2022

Revenue

$54,414

Expenses

$65,558

Net Income

-$11,144

Net Assets

$306,872

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$22,792	41.9%
Program Services	$5,017	9.2%
Investment Income	$0
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$0

Assets/Debt
Total Assets	$306,872
Total Liabilities	$0
Net Assets	$306,872

Compensation

Key Employees and Officers	Compensation	Other
Michelle Terrell (President)	$0	$0
Justin Watts (Vice-president)	$0	$0
Kathrynne Baumtrog (Recording Secretary)	$0	$0
Cindy Thrury Smith (Membership Secretary)	$0	$0
Ann Kessen (Treasurer)	$0	$0
Anthony Hertzel (Publications Chair)	$0	$0
Gerald Hoekstra (Newsletter Editor)	$0	$0
Tom Tustison (Records Committee Chair)	$0	$0
Steve Wilson (Grants Committee Chair)	$0	$0
David Cahlander (Communications Committee Chair)	$0	$0

+ View more people

990-EZ

Filed on Feb. 20, 2023

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending Oct.
2021

Revenue

$48,454

Expenses

$48,110

Net Income

$344

Net Assets

$326,802

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$13,633	28.1%
Program Services	$8,416	17.4%
Investment Income	$0
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$0

Assets/Debt
Total Assets	$326,802
Total Liabilities	$0
Net Assets	$326,802

Compensation

Key Employees and Officers	Compensation	Other
Richard King (President)	$0	$0
Michelle Terrell (Vice-president)	$0	$0
Kathrynne Baumtrog (Recording Secretary)	$0	$0
Cindy Thrury Smith (Membership Secretary)	$0	$0
Ann Kessen (Treasurer)	$0	$0
Anthony Hertzel (Publications Chair)	$0	$0
Gerald Hoekstra (Newsletter Editor)	$0	$0
Tom Tustison (Records Committee Chair)	$0	$0
Steve Wilson (Grants Committee Chair)	$0	$0
David Cahlander (Communications Committee Chair)	$0	$0

+ View more people

990-EZ

Filed on Feb. 24, 2022

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending Oct.
2020

Revenue

$39,842

Expenses

$39,003

Net Income

$839

Net Assets

$316,869

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$11,383	28.6%
Program Services	$3,982	10.0%
Investment Income	$0
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$0

Assets/Debt
Total Assets	$316,869
Total Liabilities	$0
Net Assets	$316,869

The IRS has provided extracted financial data for this filing, but has not yet released the source documents.

Fiscal Year Ending Oct.
2019

Revenue

$39,784

Expenses

$38,861

Net Income

$923

Net Assets

$308,497

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$10,685	26.9%
Program Services	$4,115	10.3%
Investment Income	$0
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$0

Assets/Debt
Total Assets	$308,497
Total Liabilities	$0
Net Assets	$308,497

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

PDF (2 of 2)

Fiscal Year Ending Oct.
2018

Revenue

$37,173

Expenses

$45,375

Net Income

-$8,202

Net Assets

$303,732

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$13,036	35.1%
Program Services	$1,745	4.7%
Investment Income	$0
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$0

Assets/Debt
Total Assets	$303,732
Total Liabilities	$0
Net Assets	$303,732

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Oct.
2017

Revenue

$42,393

Expenses

$45,524

Net Income

-$3,131

Net Assets

$302,905

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$10,045	23.7%
Program Services	$2,825	6.7%
Investment Income	$0
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$0

Assets/Debt
Total Assets	$302,905
Total Liabilities	$0
Net Assets	$302,905

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Oct.
2016

Revenue

$44,763

Expenses

$30,443

Net Income

$14,320

Net Assets

$279,130

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$11,333	25.3%
Program Services	$2,816	6.3%
Investment Income	$2,042	4.6%
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$40	0.1%

Assets/Debt
Total Assets	$279,130
Total Liabilities	$0
Net Assets	$279,130

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

PDF (2 of 2)

990-T

For unrelated business income from activities not substantially related to the organization's tax-exempt purpose

PDF

PDF (2 of 2)

Fiscal Year Ending Oct.
2015

Revenue

$48,160

Expenses

$38,846

Net Income

$9,314

Net Assets

$268,775

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$14,441	30.0%
Program Services	$2,249	4.7%
Investment Income	$6,282	13.0%
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$40	0.1%

Assets/Debt
Total Assets	$268,775
Total Liabilities	$0
Net Assets	$268,775

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

990-T

For unrelated business income from activities not substantially related to the organization's tax-exempt purpose

PDF

Fiscal Year Ending Oct.
2014

Revenue

$50,054

Expenses

$44,124

Net Income

$5,930

Net Assets

$264,907

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$13,215	26.4%
Program Services	$2,998	6.0%
Investment Income	$3,314	6.6%
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$0

Assets/Debt
Total Assets	$264,907
Total Liabilities	$0
Net Assets	$264,907

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Oct.
2013

Revenue

$37,535

Expenses

$37,083

Net Income

$452

Net Assets

$253,224

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$6,656	17.7%
Program Services	$2,666	7.1%
Investment Income	$2,440	6.5%
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$0

Assets/Debt
Total Assets	$253,224
Total Liabilities	$0
Net Assets	$253,224

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Oct.
2012

Revenue

$39,215

Expenses

$43,681

Net Income

-$4,466

Net Assets

$230,179

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$8,245	21.0%
Program Services	$2,061	5.3%
Investment Income	$2,190	5.6%
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$72	0.2%

Assets/Debt
Total Assets	$230,179
Total Liabilities	$0
Net Assets	$230,179

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

990-T

For unrelated business income from activities not substantially related to the organization's tax-exempt purpose

PDF

Fiscal Year Ending Oct.
2011

Revenue

$43,676

Expenses

$60,221

Net Income

-$16,545

Net Assets

$215,817

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$9,292	21.3%
Program Services	$4,163	9.5%
Investment Income	$3,582	8.2%
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$1,798	4.1%

Assets/Debt
Total Assets	$215,817
Total Liabilities	$0
Net Assets	$215,817

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

PDF (2 of 2)

990-T

For unrelated business income from activities not substantially related to the organization's tax-exempt purpose

PDF

Fiscal Year Ending Oct.
2010

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

990-EZ

Fiscal Year Ending Oct.
2001

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

About This Data

What Is This Data?

Nonprofit Explorer includes summary data for nonprofit tax returns and full Form 990 documents, in both PDF and digital formats.

The summary data contains financial information from tax returns processed by the IRS since the 2012 calendar years, as well as data extracted from digital filings. IRS summary data also includes limited older records. This data release includes only a subset of what can be found in the full Form 990s.

In addition to the raw summary data, we link to PDFs and digital copies of full Form 990 documents wherever possible. This consists of separate releases by the IRS of Form 990 documents processed by the agency, which we update regularly.

We also link to copies of audits for nonprofit organizations that spent $750,000 or more in federal grant money in a single fiscal year since 2016. These audits are copied from the Federal Audit Clearinghouse.

Which Organizations Are Here?

Most organizations that have been recognized as tax exempt by the IRS have to file the Form 990 every year, unless they make less than $200,000 in revenue and have less than $500,000 in assets, in which case they have to file the Form 990-EZ. Organizations making less than $50,000 don’t have to file either form but do have to let the IRS they’re still in business via a Form 990N "e-Postcard," which does not contain financial details. Churches are not required to file Form 990.

Nonprofit Explorer has organizations that are claiming tax exemption in any of the 27 subsections of the 501(c) section of the tax code. Taxable trusts and private foundations that are required to file a form 990PF are also included.

Types of Nonprofits

There are 27 nonprofit designations based on the numbered subsections of section 501(c) of the tax code. See the list »

Get the Data

For those interested in acquiring the original data from the source, here’s where our data comes from:

Raw filing data. Includes Employer Identification Numbers and summary financials as structured data.
Exempt Organization profiles. Includes organization names, addresses, etc. You can merge this with the raw filing data using EIN numbers.
Form 990 documents. Prior to 2017, these documents were obtained and processed by Public.Resource.org and ProPublica.
Form 990 documents as XML files. Includes complete filing data (financial details, names of officers, tax schedules, etc.) in machine-readable format. Only available for electronically filed documents. Electronic data released prior to October 2021 is also available through Amazon Web Services.
Audits. PDFs of single or program-specific audits for nonprofit organizations that spent $750,000 or more in federal grant money in a single fiscal year. Available for fiscal year 2015 and later.

API

The data powering this website is available programmatically, via an API. Read the API documentation »

See an issue with the data?

Nonprofit Explorer

Browse millions of annual returns filed by tax-exempt organizations with ProPublica’s Nonprofit Explorer. See details like executive compensation, revenue, expenses and more. Search for an organization or a person, or search the full text of filings.

By Andrea Suozzo, Alec Glassford, Ash Ngu and Brandon Roberts.

Design by Jeff Frankl. Additional development by Ken Schwencke, Mike Tigas, and Sisi Wei.

E-file viewer adapted from IRS e-File Viewer by Ben Getson. Code for scraping audit documents adapated from Govwiki.

Updated October 22, 2026

Minnesota Ornithologists Union

Organization summary

Type of Nonprofit

Tax Filings by Year

Fiscal Year Ending Oct. 2025

Extracted Financial Data

Extracted Financial Data from 990-EZ

Compensation

Document Links

990-EZ

Fiscal Year Ending Oct. 2024

Extracted Financial Data

Extracted Financial Data from 990-EZ

Compensation

Document Links

990-EZ

Fiscal Year Ending Oct. 2023

Extracted Financial Data

Extracted Financial Data from 990-EZ

Compensation

Document Links

990-EZ

Fiscal Year Ending Oct. 2022

Extracted Financial Data

Extracted Financial Data from 990-EZ

Compensation

Document Links

990-EZ

Fiscal Year Ending Oct. 2021

Extracted Financial Data

Extracted Financial Data from 990-EZ

Compensation

Document Links

990-EZ

Fiscal Year Ending Oct. 2020

Extracted Financial Data

Extracted Financial Data from 990-EZ

No Document Links

Fiscal Year Ending Oct. 2019

Extracted Financial Data

Extracted Financial Data from 990-EZ

Document Links

990-EZ

Fiscal Year Ending Oct. 2018

Extracted Financial Data

Extracted Financial Data from 990-EZ

Document Links

990-EZ

Fiscal Year Ending Oct. 2017

Extracted Financial Data

Extracted Financial Data from 990-EZ

Document Links

990-EZ

Fiscal Year Ending Oct. 2016

Extracted Financial Data

Extracted Financial Data from 990-EZ

Document Links

990-EZ

990-T

Fiscal Year Ending Oct. 2015

Extracted Financial Data

Extracted Financial Data from 990-EZ

Document Links

990-EZ

990-T

Fiscal Year Ending Oct. 2014

Extracted Financial Data

Extracted Financial Data from 990-EZ

Document Links

990-EZ

Fiscal Year Ending Oct. 2013

Extracted Financial Data

Extracted Financial Data from 990-EZ

Document Links

990-EZ

Fiscal Year Ending Oct. 2012

Extracted Financial Data

Extracted Financial Data from 990-EZ

Document Links

990-EZ

Fiscal Year Ending Oct.
2025

Fiscal Year Ending Oct.
2024

Fiscal Year Ending Oct.
2023

Fiscal Year Ending Oct.
2022

Fiscal Year Ending Oct.
2021

Fiscal Year Ending Oct.
2020

Fiscal Year Ending Oct.
2019

Fiscal Year Ending Oct.
2018

Fiscal Year Ending Oct.
2017

Fiscal Year Ending Oct.
2016

Fiscal Year Ending Oct.
2015

Fiscal Year Ending Oct.
2014

Fiscal Year Ending Oct.
2013

Fiscal Year Ending Oct.
2012

Fiscal Year Ending Oct.
2011

Fiscal Year Ending Oct.
2010

Fiscal Year Ending Oct.
2009

Fiscal Year Ending Oct.
2008

Fiscal Year Ending Dec.
2007

Fiscal Year Ending Oct.
2007

Fiscal Year Ending Oct.
2006

Fiscal Year Ending Oct.
2005

Fiscal Year Ending Oct.
2004

Fiscal Year Ending Oct.
2003

Fiscal Year Ending Oct.
2002

Fiscal Year Ending Oct.
2001