You certainly don’t see every single bird that visits your yard, so how do you get a rough headcount? Or how do you authoritatively tell a friend there were xxx birds in your yard? Experts disagree on details, but they’re in the same ballpark.
Count the birds you see in your yard in a typical ten second span (count those at your feeders, flying nearby and those just watching). Multiply that number by 5 or 6 (that’s where they disagree) for a very approximate number of birds who look to your yard for support.
OWEN YOST, in addition to being a
blogger, is a licensed Landscape Architect emeritus who has lived and worked in
north Texas for over 30 years. He is the recipient of a Lifetime Achievement
Award of the Native Plant Society of Texas, and is a member of the American Society
of Landscape Architects (ASLA), International Federation of Landscape
Architects, National Wildlife Federation and the Audubon Society. His office is
at Yost87@charter.net in Denton.