![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjHtfV2_P9LT0kCVhu8h-2ttSLvPAI7EzpDdFYzegNOH98-ieu1GLLfLoHmw_qoIImsSeMUKrqStxWExQlV-1DkUJbMnfQZgBC8BzYcA-HaL4RQhPiEtpCS51ss2a274ux0GbDsGa9wUNW7/s320/YELLOW+WARBLER+fledgling+Whitemarsh+PA+8.00+am+07042018.png)
Here the chips in the first 6 seconds of the cut are adult chips, followed by two flight calls and then by the calls of fledglings (Dark-eyed Junco singing, July, ME).
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgDK99VOGgKePZqqYDyiIo2LhsXXBv-LWDyRa8GTRjLSrqhVPAmf5MixaMwOTi_iOMXZUyzv4b17Bx9aZAHi5dS4i-4ahX3amU-OnSxL9P-ZWL1GCUFHU1erH_NJ4nCiWNiF6At6YNYtMRd/s320/YELLOW+WARBLER+juv1+Palmyra+NJ+62710.wav.png)
Prairie Warbler is similar but a little harder (June, PA).
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgCM_hPxybzeN5O6atruH_NhGugZceZcv8EZEf5VcJ6Yd5NIK2VibTAxXEDjed6LF-PlmcSh9-zj2o5VwvlfecxptYMoZK0wmy0ItTyt4s0FuW3Mfeh9UOludqn2wwN1_AQ4DHaovsZudm_/s1600/PRAIRIE+WARBLER+juv+Evansburg+SP+PA+6222014+3.45pm.WAV.png)
A juvenile Pine Warbler in the New Jersey pine barrens; the calls have a prominent trill component (Jun).
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgZFaLvbYfx11PssQFffIgP2Y2IrQj9crwx-lLFyffL0JrVU-FSPynx-Ib4L_WT2na56NeXWplos9PrX7LKHe4MzS_7HqoMlkk1KQkL-uT61VL_FCbD74es6wRAfaNqy696RaDqAFOALfc/s320/PINE+WARBLER+juv+begging+Wharton+SF+NJ+61607.wav.png)
Calls increase in rapidity to the point of being fed at 7 seconds (Aug, NJ).
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhA3uJJX56cwW1DR2mcEX0Fgy922A_zxeN5Ocw7TQN9Abl-KQCL7witufpXNcFtUxci-BuvlLsqMWV1YdfDGqYQV1gdD36ZeodJwq6ynrZ57vRBklWuLliZAxCSeodrAilp0a28OwbAv_FA/s320/PINE+WARBLER+juv+Wharton+SF+NJ+8409+(3).wav.png)
Yellow-rumped Warbler juveniles sound similar but the call is lower and more staccato (July, ME).
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjhANNiKIsQuFbUk6y7l5tLEw7NXWcFcEr7UCDOtDRjqNvc2wo_bUiLWJyuotXLdzL2JWCZAX2np9sC5LEzhMbIBVtDaFokQP9AGeDse2m2PgokTNEyB4LDMnDa3esLP-M77nijKa_PX-nA/s320/Yellow-Rumped+Warbler+juv+Seawall+ME+07102014+6.14am.png)
Black-throated Blue Warbler fledgling calls are higher, and if this recording is typical, more rapid; note trills at the time of feeding (July, ME).
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgAmK9IdKo2L-aG10PB_O3KmoBHQRjvwTR_q_fdYXhHc52qDWFKuiQiyYAfp_x-YvHtolq7QzdXICqFxHWLxvB9JluVdI3MGLui7-Y0cz0jG_ZAMF336_InVZGss_-yTt3uLOaIbw-ysLFU/s320/BLACK-THROATED+BLUE+WARBLER++juv+Sears+Island+ME+071811.WAV.png)
Juvenile Black-throated Green Warbler begging calls are metallic (July, ME).
(Sep, ME).
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjsk8kdTiapEG8wgC4eJCisEmdAcreTIZX3DD5bW3zDLFjZjvzGoqY3bz-Ek7OaOclp7chnpqipjbbZlxKQGZAAH1wqfVcXjgLVNd0MDOSBkMRmJCgR85fETm2URuH2zG-KWj_4pMK5ms1k/s320/BLACK-THROATED+GREEN+WARBLER+juv1+Seal+Cove+ME+71610.WAV.png)
These birds called in triplets, the third call being similar to Black-and-white Warbler, the next species (July, ME).
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhgv-hkrtRBxXFi-vu_h5wfev1espVSdlDEEdpT7GkWejikw4MxW8txnOSTsRP47E93g_HUahyYuVu3kJid-w39viqCpAK140ehznQnJ8RS0XONujuZPMY3DhBQIRAuS0fqmEiqKX6-RTzp/s1600/BLACK-THROATED+GREEN+WARBLER+juv+Wonderland+Trail+Seawall+ME+07102014+6.00am.WAV.png)
Juvenile Black-and-white Warblers are similar but have a harder typewriter-like call (Worm-eating Warbler chipping, June, NJ).
(these birds were not visualized, July, ME)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg5S6yEwIxZf_Nx_kRa2AWbDJmP_YYVUiSzPUDkMNBkc8WZRe_Z5EjR2YlI_UKdex5mfxhpxTlhigDlsJeFj7_yLX7UmPgp2fcTZCZha9zrb08Isse1hZk15pBlFIY7MaXujJvVlfKK0pFZ/s320/BLACK-AND-WHITE+WARBLER+juv+Sears+Island+ME+07172011.png)
Fledgling Worm-eating Warblers are similar to Black-and-white but are higher (June, NJ).
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi41bEFmQ5hUyjwlS3OUtCLEGMWVUYKsMCmTkCh9KYhlodcVWKl5p4t94sP1HCTWkK0-AqNgF0Yg_ZU445S0lRltjWvdDj7qVp0DBzFP2V5WoS3uqBbF7wKg-azShmKLY94OsopIfR5Ekba/s320/WORM-EATING+WARBLER+juv6+Glassboro+WMA+NJ+062312.WAV.png)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgSDxMEUWen091ywvPLua-4ZXQmfklFYxDqCkEkB_DQkPDscCnqaEHqxVtTpzNc-j-1RQZ3qx2bzvn8OTxzyOpywth8Ax6eYuEP1E_QipB0pp15gMUMJrJV-NB047oNrsgWDiXuZfNpgN-p/s320/WORM-EATING+WARBLER1+juv6+Glassboro+WMA+NJ+062312.WAV.png)
The calls of fledgling American Redstarts are soft and high; juvenile begging and being fed by adult female (June, NJ).
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEir6EJUMI0bXwAV_aEZokoeAK9ZmGkUab-wvGBepFcC66kXBpIj0PQZO6xbwNAvO46VL26vc60Vi2sY0UwT7QcJnsIMkbwFLXku9WOOvLjf7EuX-WkDwYovI6hll1v-hfmYY49R1jLBJcJH/s320/AMERICAN+REDSTART+juv1+Palmyra+NJ+61210.wav.png)
Canada Warbler fledgling chips are similar (lower chips by adult in background, July, ME).
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj0DyRsZh4P27kswBGYZm-rX1QOQOR4fQK_9gJ1DMY7K30f8CxhJeDtwtelgiPEg6UuCB86T5EuasL6_F1XoSSKiOG4Btw5onbMMPlkCFXkPHFAsABCRAvdBswKuMPVRJd5reNmu1bdojnt/s320/CANADA+WARBLER+pres+juv+Camden+ME+71710.WAV.png)
Juvenile Ovenbirds have an extremely high-pitched soft call, often a twittering (June, NJ).
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhXlcJBPp26hyphenhyphen66qYEhxRC2qP7he30GsP1PiHuU_t-nrYy8bxy5acZSQSVrV0GibJecjfWjeRPpkvdfZOCP5vR82GZEZtr8SS9TLV8KvaG_DpjvydlCeRsF1JVlmtvkQ1CCIUskVcD2EgWk/s320/OVENBIRD+juv+calls+Glassboro+WMA+NJ+61709+(2).wav.png)
A different looking call by a newly fledged Ovenbird running along the ground, but still very high pitched (June, PA).
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjYasguSVBlxW7EmxzpuyiYetaS21hwBSmJa1VOHrVgOBXL3nN-q4zJbeqj3S3MpRsMo0_IN4n7xdF4N96EulQf61RDY5JXI0-HOI8OAkeEnPXZ7wqpd-2r8OU2npo0_BX6iC-_vgf4vV_U/s320/OVENBIRD+fledgling+Hawk+Mountain+PA+11.20am+06072015.WAV.png)
Fledgling Blackburnian Warblers have a rapid, high, buzzy call (July, ME).
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg07c-URuM0kvF49yQaFjiyckoCQzpOZtUyAFt0kpv0zY2-UMcarMY4iPaeM4JvCJVjMYxnZITggNXF8OKXZ1OJZcVfqHgg2bYmQb53krVzhyA59KkWbBAACg5b4u9Ab-Sm0raHqn2xsz1F/s320/BLACKBURNIAN+WARBLER+juv2+SW+Harbor+ME+71310.WAV.png)
Black-throated Green and Blackburnian Warbler fledglings together for comparison (July, ME).
Magnolia Warbler is similar to Blackburnian; these fledglings called mostly in triplets, the last note being lower. The calls are almost identical to those of fledgling Northern Cardinals (July, ME).
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhzAl8OWqm6Ad0XWdwUpCP0M5k34RQec4ar-w1SCdNx5EPF_JkV_UopiNup04v8pnqpf1m7xLIuiMLMvK5qVCFaWDHYjXPVXd3X71FuLSYmHug3jvU7ocwE1cxUIWqi93h8ur1NTy6m3vZ_/s320/MAGNOLIA+WARBLER++juv+Sears+Island+ME+071811.WAV.png)
Juvenile Chestnut-sided Warblers utter a soft chip that is used as a location call, and have a slurred begging call when a parent approaches (July, ME).
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh-Y7mnv8MnSf8DGWZ2tMsupkcfy16eN4MDuW5Gk2Uw8pxuFqJIDiUjH1zFTcCvhyphenhyphenaJ52K9nKYJu5UnkntFedWZ9oGUjqX2uGXBfUskU9kRZdOmPexGT_p8xQhONstpE1wv9zP9tTgOP37U/s320/CHESTNUT-SIDED+WARBLER++juv+Sears+Island+ME+71110.WAV.png)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEggUGPmS3paufGgv8aHrCVLW7js2RPy4VvRpqh83erwLnxCsrW_4qAs3aJebBv7mhY1zf2ZM0tQRksdqUjyhmIP8p8WtDd2O3gV9eSpkGkWxAZxq-ruwUBW6laR_5XS_3fiGXTZIWKHJEhg/s320/CHESTNUT-SIDED+WARBLER++juv+begging+Sears+Island+ME+71110.WAV.png)
(July, ME).
The softer chips are fledgling calls, the sharper, emphatic chips are by the adult male (July, ME).
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhoqk04dEc8PMgiRIvW1G-k7hjrCul9JySRFCiaw9JTaOE9TtwAEJ5iBlHfxrWEpeGaACIw9DH9-ugPHJ_eAjAeYUJwlYlnBpJ1Xu8ZZ1UMkMsph-M48cyCLzWcUwr6KIKRsyGBgEY50tpt/s320/CHESTNUT-SIDED+WARBLER++juv+and+ad++Sears+Island+ME+71110.WAV.png)
Adult-like calls by fledglings that were likely older (July, ME).
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEitUfT-IK52DsprmktaL3EfogNRTVKziOgke8-kWGRGNTM9gXee7_HJN75_jF1RMiMltB4ZVyN7K0To-b8U0QJbqjqfjaYWLcUpSgRlKl6b-EkE0T_XW641fJq1eMmvynreRCXPC8bd4LH4/s320/CHESTNUT-SIDED+WARBLER+juv+Sears+Island+ME+07142013.WAV.png)
Juvenile Northern Parulas have extremely high-pitched chips (July, ME).
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhFa5J642tOiIZtMUdodJbGnAEUR02q3XbVZxhmEvd5dkcVcXwGcwhrruswvXlpyYTHs9wg4fVaTbtAhvzkUdPf2eHqP1l4Sf_d-Y0dvIgdvQxo_nW-lNlW-AT5C_ZT0FOO5pXdOJJZFwQY/s320/NORTHERN+PARULA+juv+and+ad+Seawall+ME+71210.WAV.png)
(July, ME)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjUIeT6KwRbNdurFu8W882_mQMn_MdZec_4ne0xLO8uYfDGDtXezlffJScGliMcKMO6DI9h8eV41GhfLwe0vJVSUdEzKJe7rFtjeSWrfTIRZvDUpRCR5ayobL29hKC39fmvKru9HPvTWyOD/s1600/NORTHERN+PARULA+juv1+pres+Seawall+ME+07092014+6.33am.WAV.png)
Juvenile Common Yellowthroats have a location call similar to the chip of adults (July, PA).
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj1qE0IYEWMcHWjMKXGo3DAnW-CleiqgsmBqOEZhRORU_U3kSqN3Q8PfUhcZOOvs_VI7jwbwm21I8SRfiVPR33oxrQ0qsWqy2GOLTfl5o_QF5HxnDfmxzxeHS7sCBCZ39xlwl0Wl7Z1oKDJ/s320/COMMON+YELLOWTHROAT+juv+PERT+PA+72809.wav.png)
Calls speed up into the begging call when being fed (July, PA).
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgD4iabkEGOhJyhWh0kkspgWAm2SXYP7eGXRo2CTQ9LMXVm41zYEHNASI22EY_10HIQgSZNKYtILDW8CZLbmPAOhaRdehmMDPXsUm-LOT1SzodJ6O0SnYtCKNkXuBJBrmqWZ-Nk8-hZp9D5/s320/COMMON+YELLOWTHROAT+juv+begging+PERT+PA+72809+(3).wav.png)
As is commonplace with fledglings, they fell silent when an adult bird called the alarm (July, PA).
Louisiana Waterthrush fledglings have a short trill-like call (May, NJ).
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjGjHxxxAt0VJ8C8mnq_aPSnh_zaTDXFWwyeBcrHiNP48d0SD_nv4Hdp3a3gNidE6mSIOXC9NzwF7DeG6nJPNlnWvx982r_HekXRyhE812olWP8dfAH4VEtP4U6I2inNWQRbQLgfxoSn1Am/s320/LOUISIANA+WATERTHRUSH+juv3+Stokes+SF+NJ+52910.wav.png)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhB_w_lTcLvthINCNlHE04xNrjWhJiu-k9FHnRaaDQj-IIc9wy8oRdwydqenzSfJPhC7vXQtR2l1TB4QcdC9dqj87uNAZIOBCNaf7o8YHnB9cZUnCuElz_f__6SpcnPvozfsdDYNRz6SLzA/s320/LOUISIANA+WATERTHRUSH+juv1+Stokes+SF+NJ+52910.wav.png)
As is typical of fledgling calls, they speed up as the parent hands over food. The calls are similar to those of fledgling Chipping Sparrows.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjgOWjJ7UjD2OMqvqc2d0sMvwLaVt8zMPgxfdPFgriBkcJljBtru1dcLC1cEXXJd09FoQMU2Ah2v-DbjDrnPUmsBiG064G3ZntNSl8m7pIP-gt8MScfusI-JvYJPESCww4hTQcMfNW-Zr5Z/s320/LOUISIANA+WATERTHRUSH+juv1+begging+Stokes+SF+NJ+52910.wav.png)
A different, rising call.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjMqWyQ46JjL3yY5_T5eN052ozRYgoI_44t5OCk5TgzoIoi61P3U3bM1yDzOEpJIAWyKG8839PIpCF1YADz7Afhvqq8NPMmj08XxNp7KhQpmBdoj58wenrm43xQWv2ozA2NwxrNcqSXDpR8/s320/LOUISIANA+WATERTHRUSH+juv2+Stokes+SF+NJ+52910.wav.png)
The Blue-winged Warbler juvenile call is a high, fine buzz (not visualized, July, NJ).
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgNh2_4Mxe43TceaQO_AM7P8JtnGuR0ebDZ61HpDsnT9u9e4tH6BnVqjYYkx6RCsZps4RySEeGLAyoHRZpqhAXi1cYBbQxHNdMRahtyrNYRNDrzDkHxbQUFoVOEn6phLASjqEV2d6mhVgKX/s320/BLUE-WINGED+WARBLER+juv+ATsion+NJ+730pm+07112016.png)
Swainson's Warbler fledgling (early June, NC)
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