It’s the longest day of the year, the first day of summer, and a great time to be outdoors. With books. As a curious naturalist, I have field guides in my kitchen, on my desk, in my car and on my phone. Books on birds, dragonflies, grasses, butterflies, birds, trees, mammals, spiders, birds, ferns, flowering plants, non-flowering plants, insects, reptiles, and did I say birds? I love my field guides for their history (I still have some books that belonged to my parents) and for their up-to-date info and detailed pictures and keys that give me a chance to figure out what the heck I’m looking at. Here’s a link to a lovely essay on the joy of field guides by Helen Macdonald, the author of H is for Hawk.