Do you ever see flocks of birds in your yard that show up in droves one year, but are completely absent the next? Some nomadic species such as Pine Siskins move based on the availability of food and habitat. It’s called irruptive migration, and it sometimes leads to backyards full of siskins. While

Most bird species in North America mate for a single breeding season. Some may team up again the following year, just because both stay in - or return to - the same territory. Fewer than one-fifth of Song Sparrow pairs are reunited. Hawks, eagles, and ravens have wide territories, thus few contacts

What is it that draws us to a romantic partner? Birds have lots of ways to catch the attention of a mate. Most cranes duet with prospective partners for years before they begin breeding. Crested Auklets of both sexes produce a pungent citrus perfume. And Blue-footed Boobies dance, showing off their

eBird, a project of the Cornell Lab of Ornithology, lets you log the bird species you observe on a smartphone app or on the web. Whether you’re going on a birding trip or enjoying birds near home, you can list the species you found on eBird. Millions of people all over the world help eBird create a

Over the course of four days in February, the Great Backyard Bird Count gathers heaps of info about birds all over the world — and helps people connect with their local birds. Anyone can participate with the Merlin Bird ID app. And if you’re familiar with your neighborhood birds, you can submit a

Some birds woo a mate by building the best nest. Males of many weaverbird species construct a series of intricately woven nests to impress a prospective partner. A male Red-winged Blackbird can even attract multiple mates if he controls prime breeding territory. Adélie Penguins construct their nests

Las aves poseen una anatomía respiratoria sumamente eficiente que impulsa el esfuerzo del vuelo. Esto se debe a grandes sacos de aire de paredes delgadas distribuidos por toda la cavidad corporal, que funcionan como los fuelles en un acordeón. Este sistema parabronquial para extraer oxígeno del aire

Organized by the Cornell Lab of Ornithology, Project NestWatch is made up of volunteers around the world who monitor bird nests, reporting whether the birds successfully raise their young. Joining the project involves a bit of online training, finding a nearby bird nest, and briefly checking on it

Author and illustrator Becca Rowland likes to keep an eye out for cardinals. Her mom loves them and is pretty good at finding them, too. Becca didn’t know how she did it, until they realized their mom was birding by ear! Now Becca has written a new book called, Bird Talk: Hilariously Accurate Ways

You’ve probably heard the old saying: “A bird in the hand is worth two in the bush.” Well, it’s a very old saying, and it’s gone through some changes over the years. In each era, the pragmatic wisdom is clear: Hold on to the sure thing rather than taking a gamble on something better. The saying even