What is _BirdChimeSlotId and how do I manage it?

_BirdChimeSlotId appears in two different places in your Shopify store, and they serve different purposes. Understanding which one you're seeing helps you know what actions you can take.

• Cart Attribute: Appears in the "Additional Details" section on order pages. Cannot be hidden or removed, but you can clear its value.
• Line Item Property: Appears as a property on cart items (visible on both cart pages and order pages). Can be hidden.

Cart Attribute (Order Page - Cannot be Hidden)

The _BirdChimeSlotId is an internal variable that improves widget reliability and helps diagnose issues with missing dates, times, and other hard-to-debug problems. You can safely ignore this field or use it to view detailed order information.

Where it appears: In the "Additional Details" section on Shopify order pages (admin view only).

Important: You cannot remove the field from the additional details section. You can only clear its value on a per-order basis.

The variable captures key order details at checkout. It helps diagnose critical issues like checkout page caching problems. The value appears as a formatted string with semicolon-separated components:

M=D;L=;D=2025-10-23;T=7:00 PM - 8:00 PM;TS=2025-10-18 06:33:14;S=R;Z=1

Here's what each symbol represents:

Clear _BirdChimeSlotId value on order pages

You can clear its value on a per-order basis:

1. Open any order page
2. Click the pencil icon next to "Additional Details"
3. Edit the _BirdChimeSlotId value to empty
4. Click Save

This reduces the UI space used by the field. However, we recommend keeping the value intact for troubleshooting purposes.

Line Item Property (Cart Page - Can be Hidden)

The _BirdChimeSlotId stores customer selections from your Bird Pickup & Delivery widget.

Where it appears: As a line item property on cart pages and order pages in Shopify Admin.

When line item properties appear: Line item properties usually don't show unless you've enabled carrier-calculated shipping (CCS) rates. They may also appear for Shopify Plus merchants with B2B features enabled.

Important: This can be hidden from customer-facing cart pages. It determines which delivery rates to display during Shopify checkout.

The _BirdChimeSlotId contains four key pieces of information:

Test if _BirdChimeSlotId appears on your cart page

Follow these steps to check if _BirdChimeSlotId is visible to customers:

1. Add a product to your cart
2. Navigate to the cart page
3. Select delivery details in the Bird widget
4. Proceed to checkout
5. Return to the cart page

Check both your main cart page and drawer cart if applicable.

If you see _BirdChimeSlotId, you may hide it by following the steps below. If not, no action is required.

Hide _BirdChimeSlotId from your cart page

We automatically hide _BirdChimeSlotId, but some themes require manual configuration.

Option 1: Using unless statements

Option 1a: Standard Liquid syntax

Find this code in your cart file (cart.liquid, cart-template.liquid, main-cart.liquid):

{% unless p.last == blank %}

Replace with:

{% unless p.last == blank or p.first == '_BirdChimeSlotId' %}

Option 1b: Whitespace control syntax

Find this code:

{%- unless p.last == blank -%}

Replace with:

{%- unless p.last == blank or p.first == '_BirdChimeSlotId' -%}

Option 2: Using if statements

Find this code:

{% if p.last != blank %}

Replace with:

{% if p.last != blank and p.first != "_BirdChimeSlotId" %}

Option 3: Using property variables

Find this code:

{% unless property.last == blank %}

Replace with:

{% unless property.last == blank or property.first == '_BirdChimeSlotId' %}

Option 4: Remove entire property display

Find this code in cart-ajax-template.liquid or cart-notification.liquid:

<span class="ajaxcart__product-meta">{{@key}}: {{this}}</span>

Remove this line completely.

Append to existing conditions

If your code already has additional conditions, append one of these:

or p.first == "_BirdChimeSlotId"

and p.first != "_BirdChimeSlotId"

or property.first == '_BirdChimeSlotId'

That's it! The _BirdChimeSlotId will no longer appear on your cart page.

Remove _BirdChimeSlotId from orders

Shopify API restrictions prevent automatic removal from orders.

You can manually remove it by hovering over the _BirdChimeSlotId and clicking the Delete button.

Updated on: 11/06/2025