This attractive bird feeder has suction cups to hold it on the window, but it did not stay up, fell off, and broke. I would opt for more hanging feeders instead. Put a bracket on the wall above your window and let a hanging feeder hang down in front of your view. Also remember that you can't hang this type of hanger on your window if you have a full screen on the outside. It would also be difficult to do if you have a half screen or storm window that must be raised and lowered if reaching out from inside to hang it outside.