From crafting machines to smart calendars , a number of unique gifts are already on sale in the run-up to Mother’s Day, May 10th. Birdfy smart feeders are another discounted option to consider, particularly the new Birdfy Feeder Metal 2 (4K) , which is on sale for $259.99 ($50 off). If you’re looking to spend less, you can also grab the basic Birdfy Feeder for just $99.99 ($100 off) from Amazon or Birdfy , with the latter retailer throwing in a free botanical gift bag and greeting card. Birdfy’s standard bird feeder uses a 1080p camera with a 155-degree field of view and color night vision to capture birds in clear detail as they stop by. It then sends real-time alerts to the Birdfy mobile app for Android and iOS, where you can watch live feeds or browse recorded clips, whether you’re at home or away. Birdfy saves 20-second clips in the cloud for free for up to 30 days, too, so you can revisit old footage or share your newfound observations with friends later.…