The 4:1 ratio is safe and ideal for the hummingbird diet. If you put feeders out late, the birds were likely already using other sources. They will eventually come around. Also birds lay low while they are sitting on a nest. So perhaps in a week or so when babies become active… 
(these are just guesses based on observations of hummers and other birds)

On May 24, 2021, at 2:00 PM, neighbors_nobhill-nm-request@mailman.swcp.com wrote:

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Today's Topics:

  1. Re: Hummers (violagin@aol.com)

From: violagin@aol.com
Subject: Re: [Neighbors] Hummers
Date: May 23, 2021 at 1:55:27 PM EDT
To: "neighbors_nobhill-nm@mailman.swcp.com" <neighbors_nobhill-nm@mailman.swcp.com>
Reply-To: violagin@aol.com


Try equal parts sugar and water.


-----Original Message-----
From: JRB via Neighbors_nobhill-nm <neighbors_nobhill-nm@mailman.swcp.com>
To: Nob Hill Neighbors <neighbors_nobhill-nm@mailman.swcp.com>
Sent: Sat, May 22, 2021 8:26 pm
Subject: [Neighbors] Hummers

Our hummer friends are back but very few are paying any attention to my feeder.  Wondering what is going on?  I use two cups of boiled drinking water  from Smith's (not the stinky stuff that comes out of the tap), with 1/2 cup sugar, cooled and put into my totally cleaned feeder.  Very little activity/interest.  What am I doing wrong?  
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