I have noticed the same thing down here in south central Texas (USA). I h=
ave only been recording in this area for 7-8 years. but I feel like I am ge=
tting to know the transition of the frog seasons. Winter into February is =
for Leopard Frogs and Chorus Frogs. Starting in March and April, we get ou=
r summer species. The earliest I have heard the gray treefrog species (Hyla=
versicolor and Hyla chrysoscelis) is mid-March last year, and frankly that=
was earlier than I expected these "frogs of summer" to be calling.
This year I recorded Hyla versicolor on Jan 21st and and recorded several =
populations of Hyla chrysoscelis since early February. And these weren't i=
solated individuals but were healthy choruses.I don't know what it means, a=
nd I acknowledge it is a very small data set over less than a decade, but i=
t does stand out to me.
This is the critical importance of recording and documenting your local se=
asonal sounds. Without it, we have no real baseline to use to measure agai=
nst.
Chris Harrison
San Antonio, TX
"While a picture is worth a thousand words, a
sound is worth a thousand pictures." R. Murray Schafer via Bernie Krause.
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