Used in conjunction with the&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Droll-Yankees-SRG-Seattle-Rain-Guard/dp/B000HHOKW0/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Droll Yankees SRG Seattle Rain Guard</a>, I can use the seed tray to help select which birds I want to visit my feeders.  The Seattle Rain Guard will make it more difficult for larger birds to land on the feeder while the seed tray will make it easier for larger birds (and squirrels) to land on the feeder.  For example, I put a Seattle Rain Guard and the seed tray on a&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Droll-Yankees-CJM13GP-13in-Green-New-Generation-Metal-Peanut-Feeder/dp/B000K8C58C/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Droll Yankees CJM13GP 13in Green New Generation Metal Peanut Feeder</a>.  I received a reasonable amount of traffic from nuthatches, and hairy & downy woodpeckers.  The seed tray also made it very easy for squirrels to jump 6 feet through the air and land on the peanut feeder.  As soon as I removed the seed tray and the Seattle Rain Guard, squirrel raiding stopped and I immediately started getting lots of traffic from larger woodpeckers like flickers and red-bellied woodpeckers.  I do lose a little bit of pecking waste (maybe 10%??) without the seed tray in place, but it's a small price to pay to keep squirrels off the feeder.  I appreciate the flexibility that the seed tray provides.