On 2014 May 24, Carl Blackman commented:

In the last century where were a series of publications with first authors: R Adey, S Bawin, A Sheppard, C Blackman and S Dutta, who showed that radiofrequency radiation at 50, 147, 450 and 980 MHz could cause biological changes, primarily in calcium ion releases from nervous system tissues/cells, when the carrier wave was amplitude modulated at low frequency between approximately 9-20 Hz, and again at 50 Hz. Based on these reports, it would appear the authors of the Nature report have substantial work to do to unfold the underlying critical mechanisms of action.

More recently, B Pasche and colleagues have reported potential therapeutic used of 27 MHz fields when they are amplitude modulated at specific low frequencies.

Of course, when discovery research is done, if it is productive it should immediately cause more questions to be asked than it can answer; thus the need for multidisciplinary teams (and of course resources).

On 2014 May 10, Madhusudana Girija Sanal commented:

I am skeptical about the observations and conclusions presented in this paper on the effect of radio waves on spacial position sensing in birds. The paper raises more questions than answers. This paper needs scrutiny. Metal wire meshes are used to block electromagnetic waves (depending on the frequency). I did not understand how electric grounding attenuated electromagnetic noise and it came back when the circuit was open (see the accompanying video). Why the birds are sensitive to AM frequency range 50 kHz to 5 MHz? What is the evolutionary logic by which birds are sensitive to electromagnetic waves at this frequency? The earth has a magnetic field, but how it generates electromagnetic waves in this frequency range? To my knowledge there is something called "Schumann resonances" but it is unlikely that birds will evolve a mechanism to use this to sense directions. The main background in this Schumann spectrum, beginning at 3 Hz and extend to 60 Hz, and peaks at extremely low frequencies 7.83 (fundamental), 14.3, 20.8, 27.3 and 33.8 Hz. The solar radiation and its effect on the earth's atmosphere is another source of naturally occurring electromagnetic interference besides the lightning. It is also not clear in the paper about the orientation of the huts with respect to the earth's magnetic field and the position with reference to the sun. However the authors seem to admit that the previous efforts to show the influence of electromagnetic noise (excluding heat and visible light!) were not reproducible. How much electromagnetic energy (in radio frequency) was received by these birds during the procedure?

On 2014 May 10, Madhusudana Girija Sanal commented:

I am skeptical about the observations and conclusions presented in this paper on the effect of radio waves on spacial position sensing in birds. The paper raises more questions than answers. This paper needs scrutiny. Metal wire meshes are used to block electromagnetic waves (depending on the frequency). I did not understand how electric grounding attenuated electromagnetic noise and it came back when the circuit was open (see the accompanying video). Why the birds are sensitive to AM frequency range 50 kHz to 5 MHz? What is the evolutionary logic by which birds are sensitive to electromagnetic waves at this frequency? The earth has a magnetic field, but how it generates electromagnetic waves in this frequency range? To my knowledge there is something called "Schumann resonances" but it is unlikely that birds will evolve a mechanism to use this to sense directions. The main background in this Schumann spectrum, beginning at 3 Hz and extend to 60 Hz, and peaks at extremely low frequencies 7.83 (fundamental), 14.3, 20.8, 27.3 and 33.8 Hz. The solar radiation and its effect on the earth's atmosphere is another source of naturally occurring electromagnetic interference besides the lightning. It is also not clear in the paper about the orientation of the huts with respect to the earth's magnetic field and the position with reference to the sun. However the authors seem to admit that the previous efforts to show the influence of electromagnetic noise (excluding heat and visible light!) were not reproducible. How much electromagnetic energy (in radio frequency) was received by these birds during the procedure?

On 2014 May 24, Carl Blackman commented:

In the last century where were a series of publications with first authors: R Adey, S Bawin, A Sheppard, C Blackman and S Dutta, who showed that radiofrequency radiation at 50, 147, 450 and 980 MHz could cause biological changes, primarily in calcium ion releases from nervous system tissues/cells, when the carrier wave was amplitude modulated at low frequency between approximately 9-20 Hz, and again at 50 Hz. Based on these reports, it would appear the authors of the Nature report have substantial work to do to unfold the underlying critical mechanisms of action.

More recently, B Pasche and colleagues have reported potential therapeutic used of 27 MHz fields when they are amplitude modulated at specific low frequencies.

Of course, when discovery research is done, if it is productive it should immediately cause more questions to be asked than it can answer; thus the need for multidisciplinary teams (and of course resources).