<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3/A</documentType>

    <periodOfReport>2012-09-26</periodOfReport>

    <dateOfOriginalSubmission>2012-09-27</dateOfOriginalSubmission>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001261166</issuerCik>
        <issuerName>NEUBERGER BERMAN REAL ESTATE SECURITIES INCOME FUND INC</issuerName>
        <issuerTradingSymbol>NRO</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000779955</rptOwnerCik>
            <rptOwnerName>SUN LIFE INSURANCE &amp; ANNUITY CO OF NEW YORK</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>ONE GRAND CENTRAL PLACE</rptOwnerStreet1>
            <rptOwnerStreet2>60 EAST 42ND STREET, SUITE 1115</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10165</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000745544</rptOwnerCik>
            <rptOwnerName>Sun Life Assurance Co of Canada (U.S.)</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>ONE SUN LIFE EXECUTIVE PARK, SC 1303</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>WELLESLEY HILLS</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02481</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001097362</rptOwnerCik>
            <rptOwnerName>SUN LIFE FINANCIAL INC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>150 KING STREET WEST SUITE 1400</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>TORONTO</rptOwnerCity>
            <rptOwnerState>A6</rptOwnerState>
            <rptOwnerZipCode>M5H 1J9</rptOwnerZipCode>
            <rptOwnerStateDescription>ONTARIO, CANADA</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>4.00% Mandatory Redeemable Prefered Shares due 9/14/2017</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>840</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>4.00% Mandatory Redeemable Preferred Shares due 9/14/2017</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>840</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>No change to previous filing.</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>4.00% Mandatory Redeemable Preferred Shares due 9/14/2017</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>840</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>No change to previous filing.</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">520 shares was erroneously entered, total shares should have been 840 shares.</footnote>
        <footnote id="F2">520 shares was erroneously entered, total shares should have been 840 shares.</footnote>
        <footnote id="F3">520 shares was erroneously entered, total shares should have been 840 shares.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ John T. Donnelly, Senior Managing Director, Investment Strategic Research and Initiatives on behalf of Sun Life Insurance and Annuity Company of New York and Sun Life Insurance Company of Canada (U.S.)</signatureName>
        <signatureDate>2012-09-27</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Ann C. King, Authorized Signer on behalf of Sun Life Insurance and Annuity Company of New York and Sun Life Assurance Company of Canada (U.S.)</signatureName>
        <signatureDate>2012-09-27</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Stephen Peacher, Authorized Signer on behalf of Sun Life Financial Inc.</signatureName>
        <signatureDate>2012-09-27</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Angelo Manioudakis, Authorized Signer on behalf of Sun Life Financial Inc.</signatureName>
        <signatureDate>2012-09-27</signatureDate>
    </ownerSignature>
</ownershipDocument>
