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IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 27-2495398

MARYLAND ORNITHOLOGICAL SOCIETY INC

Also known as BALTIMORE BIRD CLUB

Tax-exempt · BALTIMORE, MD 21209

Address and contacts

Address (IRS master file)
4915 GREENSPRING AVE, BALTIMORE, MD 21209-4642
In care of
% RICHARD KREJCI
Mailing address (990-N for 2025)
4915 Greenspring Avenue, Baltimore MD 21209
Principal officer (990-N for 2025)
Richard Krejci, 101 Daleview Court, Timonium MD 21093

What it must file and when

IRS records say it files Form 990-N (e-Postcard). Gross receipts normally $50,000 or less. Its accounting year ends in April, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025April 30, 2026September 15, 2026990-N on file
2024April 30, 2025September 15, 2025990-N on file
2023April 30, 2024September 16, 2024990-N on file

File the 2026 990-N for MARYLAND ORNITHOLOGICAL SOCIETY INC

Due September 15, 2027 · e-filed with the IRS by 990.tax, an IRS-authorized e-file provider

IRS record

EIN
27-2495398
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (509(a)(2))
Exempt since
2011
Accounting year ends
April
Files
Form 990-N (e-Postcard)
Category (NTEE)
Animal-related (D033)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2025
Officer: Richard Krejci
April 30, 2026≤ $50,000 receipts––e-Postcard
990-N for 2024
Officer: Richard Krejci
April 30, 2025≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: Richard Krejci
April 30, 2024≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: Richard Krejci
April 30, 2023≤ $50,000 receipts––e-Postcard
990-N for 2020
Officer: Richard Krejci
April 30, 2021≤ $50,000 receipts––e-Postcard
990-N for 2019
Officer: Richard Krejci
April 30, 2020≤ $50,000 receipts––e-Postcard

990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 27-2495398).

Questions about MARYLAND ORNITHOLOGICAL SOCIETY INC

What is the EIN of MARYLAND ORNITHOLOGICAL SOCIETY INC?
The employer identification number (EIN) of MARYLAND ORNITHOLOGICAL SOCIETY INC is 27-2495398.
Is MARYLAND ORNITHOLOGICAL SOCIETY INC tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2011.
Which annual return does MARYLAND ORNITHOLOGICAL SOCIETY INC file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of MARYLAND ORNITHOLOGICAL SOCIETY INC due?
The return for tax year 2026 (the year ending April 30, 2027) is due September 15, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did MARYLAND ORNITHOLOGICAL SOCIETY INC last file with the IRS?
The latest return in the IRS public files is the 990-N for 2025 for the year ended April 30, 2026.
Who is the principal officer of MARYLAND ORNITHOLOGICAL SOCIETY INC?
The 990-N for 2025 names Richard Krejci.

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